128830758 has 32 divisors (see below), whose sum is σ = 295052544. Its totient is φ = 36736032.

The previous prime is 128830753. The next prime is 128830763. The reversal of 128830758 is 857038821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128830753) and next prime (128830763).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128830753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20641 + ... + 26147.

It is an arithmetic number, because the mean of its divisors is an integer number (9220392).

Almost surely, 2^128830758 is an apocalyptic number.

128830758 is an abundant number, since it is smaller than the sum of its proper divisors (166221786).

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

128830758 is a wasteful number, since it uses less digits than its factorization.

128830758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 128830758 is about 11350.3637827164. The cubic root of 128830758 is about 505.0563711866.

The spelling of 128830758 in words is "one hundred twenty-eight million, eight hundred thirty thousand, seven hundred fifty-eight".