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2872040 = 235193779
BaseRepresentation
bin1010111101001011101000
312101220200212
422331023220
51213401130
6141320252
733261203
oct12751350
95356625
102872040
111691896
12b66088
13797342
1454a93a
153bae95
hex2bd2e8

2872040 has 32 divisors (see below), whose sum is σ = 6804000. Its totient is φ = 1088064.

The previous prime is 2872027. The next prime is 2872043. The reversal of 2872040 is 402782.

It is a super-2 number, since 2×28720402 = 16497227523200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2871997 and 2872015.

It is not an unprimeable number, because it can be changed into a prime (2872043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130 + ... + 2649.

It is an arithmetic number, because the mean of its divisors is an integer number (212625).

22872040 is an apocalyptic number.

2872040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2872040 is an abundant number, since it is smaller than the sum of its proper divisors (3931960).

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

2872040 is a wasteful number, since it uses less digits than its factorization.

2872040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2872040 is about 1694.7094146195. The cubic root of 2872040 is about 142.1445331269.

The spelling of 2872040 in words is "two million, eight hundred seventy-two thousand, forty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 3779 7558 15116 18895 30232 37790 71801 75580 143602 151160 287204 359005 574408 718010 1436020 2872040