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4387872 = 25345707
BaseRepresentation
bin10000101111010000100000
322020221000210
4100233100200
52110402442
6234014120
752203426
oct20572040
98227023
104387872
112527745
121577340
13ba8298
14823116
155ba19c
hex42f420

4387872 has 24 divisors (see below), whose sum is σ = 11518416. Its totient is φ = 1462592.

The previous prime is 4387847. The next prime is 4387891. The reversal of 4387872 is 2787834.

It is a tau number, because it is divible by the number of its divisors (24).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 4387872.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22758 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (479934).

Almost surely, 24387872 is an apocalyptic number.

It is an amenable number.

4387872 is an abundant number, since it is smaller than the sum of its proper divisors (7130544).

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

4387872 is a wasteful number, since it uses less digits than its factorization.

4387872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45720 (or 45712 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 4387872 is about 2094.7248029276. The cubic root of 4387872 is about 163.7135590880.

The spelling of 4387872 in words is "four million, three hundred eighty-seven thousand, eight hundred seventy-two".