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3102420 = 2235291783
BaseRepresentation
bin1011110101011011010100
312211121201110
423311123110
51243234140
6150255020
735240646
oct13653324
95747643
103102420
111829992
121057470
13848169
145aa896
15414380
hex2f56d4

3102420 has 48 divisors (see below), whose sum is σ = 8991360. Its totient is φ = 798336.

The previous prime is 3102419. The next prime is 3102431. The reversal of 3102420 is 242013.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 3102396 and 3102405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849 + ... + 2631.

It is an arithmetic number, because the mean of its divisors is an integer number (187320).

Almost surely, 23102420 is an apocalyptic number.

3102420 is a gapful number since it is divisible by the number (30) 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 3102420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4495680).

3102420 is an abundant number, since it is smaller than the sum of its proper divisors (5888940).

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

3102420 is a wasteful number, since it uses less digits than its factorization.

3102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 3102420 is about 1761.3687859162. The cubic root of 3102420 is about 145.8479056640.

Adding to 3102420 its reverse (242013), we get a palindrome (3344433).

The spelling of 3102420 in words is "three million, one hundred two thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 29 30 58 60 87 116 145 174 290 348 435 580 870 1740 1783 3566 5349 7132 8915 10698 17830 21396 26745 35660 51707 53490 103414 106980 155121 206828 258535 310242 517070 620484 775605 1034140 1551210 3102420