128494758 has 48 divisors (see below), whose sum is σ = 314694720. Its totient is φ = 34779024.

The previous prime is 128494753. The next prime is 128494763. The reversal of 128494758 is 857494821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128494753) and next prime (128494763).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128494753) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5916 + ... + 17087.

It is an arithmetic number, because the mean of its divisors is an integer number (6556140).

Almost surely, 2^128494758 is an apocalyptic number.

128494758 is an abundant number, since it is smaller than the sum of its proper divisors (186199962).

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

128494758 is a wasteful number, since it uses less digits than its factorization.

128494758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23041 (or 23034 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 128494758 is about 11335.5528316884. The cubic root of 128494758 is about 504.6169143194.

The spelling of 128494758 in words is "one hundred twenty-eight million, four hundred ninety-four thousand, seven hundred fifty-eight".