128751492 has 12 divisors (see below), whose sum is σ = 300420176. Its totient is φ = 42917160.

The previous prime is 128751479. The next prime is 128751529. The reversal of 128751492 is 294157821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 128751492.

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, 5364634 + ... + 5364657.

Almost surely, 2^128751492 is an apocalyptic number.

128751492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128751492 is an abundant number, since it is smaller than the sum of its proper divisors (171668684).

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

128751492 is a wasteful number, since it uses less digits than its factorization.

128751492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729298 (or 10729296 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 128751492 is about 11346.8714630950. The cubic root of 128751492 is about 504.9527675330.

The spelling of 128751492 in words is "one hundred twenty-eight million, seven hundred fifty-one thousand, four hundred ninety-two".