128801004 has 24 divisors (see below), whose sum is σ = 301789488. Its totient is φ = 42754560.

The previous prime is 128800999. The next prime is 128801011. The reversal of 128801004 is 400108821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19377 + ... + 25160.

It is an arithmetic number, because the mean of its divisors is an integer number (12574562).

Almost surely, 2^128801004 is an apocalyptic number.

It is an amenable number.

128801004 is an abundant number, since it is smaller than the sum of its proper divisors (172988484).

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

128801004 is a wasteful number, since it uses less digits than its factorization.

128801004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44785 (or 44783 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 128801004 is about 11349.0530001406. The cubic root of 128801004 is about 505.0174865689.

Adding to 128801004 its reverse (400108821), we get a palindrome (528909825).

The spelling of 128801004 in words is "one hundred twenty-eight million, eight hundred one thousand, four".