128863130 has 32 divisors (see below), whose sum is σ = 266362560. Its totient is φ = 44392320.

The previous prime is 128863129. The next prime is 128863151. The reversal of 128863130 is 31368821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28739 + ... + 32918.

It is an arithmetic number, because the mean of its divisors is an integer number (8323830).

Almost surely, 2^128863130 is an apocalyptic number.

128863130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128863130 is an abundant number, since it is smaller than the sum of its proper divisors (137499430).

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

128863130 is a wasteful number, since it uses less digits than its factorization.

128863130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61694.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 128863130 is about 11351.7897267347. The cubic root of 128863130 is about 505.0986703908.

The spelling of 128863130 in words is "one hundred twenty-eight million, eight hundred sixty-three thousand, one hundred thirty".