128859652 has 6 divisors (see below), whose sum is σ = 225504398. Its totient is φ = 64429824.

The previous prime is 128859613. The next prime is 128859667. The reversal of 128859652 is 256958821.

It can be written as a sum of positive squares in only one way, i.e., 82156096 + 46703556 = 9064^2 + 6834^2 .

It is a super-2 number, since 2×128859652² = 33209619827122208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16107453 + ... + 16107460.

Almost surely, 2^128859652 is an apocalyptic number.

It is an amenable number.

128859652 is a deficient number, since it is larger than the sum of its proper divisors (96644746).

128859652 is a wasteful number, since it uses less digits than its factorization.

128859652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32214917 (or 32214915 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 128859652 is about 11351.6365339981. The cubic root of 128859652 is about 505.0941261663.

The spelling of 128859652 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, six hundred fifty-two".