128264860 has 12 divisors (see below), whose sum is σ = 269356248. Its totient is φ = 51305936.

The previous prime is 128264827. The next prime is 128264893. The reversal of 128264860 is 68462821.

It is an interprime number because it is at equal distance from previous prime (128264827) and next prime (128264893).

It is a congruent number.

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, 3206602 + ... + 3206641.

It is an arithmetic number, because the mean of its divisors is an integer number (22446354).

Almost surely, 2^128264860 is an apocalyptic number.

128264860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128264860 is an abundant number, since it is smaller than the sum of its proper divisors (141091388).

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

128264860 is a wasteful number, since it uses less digits than its factorization.

128264860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413252 (or 6413250 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 128264860 is about 11325.4077189300. The cubic root of 128264860 is about 504.3157874429.

The spelling of 128264860 in words is "one hundred twenty-eight million, two hundred sixty-four thousand, eight hundred sixty".