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2472140 = 2251117661
BaseRepresentation
bin1001011011100011001100
311122121010202
421123203030
51113102030
6124553032
730004256
oct11334314
94577122
102472140
1114393a0
129b2778
13687308
14484cd6
1533c745
hex25b8cc

2472140 has 48 divisors (see below), whose sum is σ = 6005664. Its totient is φ = 844800.

The previous prime is 2472131. The next prime is 2472143. The reversal of 2472140 is 412742.

2472140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×24721402 = 12222952359200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2472143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3410 + ... + 4070.

It is an arithmetic number, because the mean of its divisors is an integer number (125118).

22472140 is an apocalyptic number.

2472140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2472140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3002832).

2472140 is an abundant number, since it is smaller than the sum of its proper divisors (3533524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2472140 is a wasteful number, since it uses less digits than its factorization.

2472140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2472140 is about 1572.3040418443. The cubic root of 2472140 is about 135.2148385380.

Adding to 2472140 its reverse (412742), we get a palindrome (2884882).

The spelling of 2472140 in words is "two million, four hundred seventy-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 11 17 20 22 34 44 55 68 85 110 170 187 220 340 374 661 748 935 1322 1870 2644 3305 3740 6610 7271 11237 13220 14542 22474 29084 36355 44948 56185 72710 112370 123607 145420 224740 247214 494428 618035 1236070 2472140