128870364 has 24 divisors (see below), whose sum is σ = 343654528. Its totient is φ = 36820080.

The previous prime is 128870363. The next prime is 128870383. The reversal of 128870364 is 463078821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128870363) 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, 767002 + ... + 767169.

Almost surely, 2^128870364 is an apocalyptic number.

128870364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128870364 is an abundant number, since it is smaller than the sum of its proper divisors (214784164).

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

128870364 is a wasteful number, since it uses less digits than its factorization.

128870364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534185 (or 1534183 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 128870364 is about 11352.1083504343. The cubic root of 128870364 is about 505.1081218023.

The spelling of 128870364 in words is "one hundred twenty-eight million, eight hundred seventy thousand, three hundred sixty-four".