128894704 has 20 divisors (see below), whose sum is σ = 253968120. Its totient is φ = 63354560.

The previous prime is 128894687. The next prime is 128894719. The reversal of 128894704 is 407498821.

It is a super-2 number, since 2×128894704² = 33227689438495232, which contains 22 as substring.

It is a congruent number.

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, 67327 + ... + 69214.

It is an arithmetic number, because the mean of its divisors is an integer number (12698406).

Almost surely, 2^128894704 is an apocalyptic number.

It is an amenable number.

128894704 is a deficient number, since it is larger than the sum of its proper divisors (125073416).

128894704 is a wasteful number, since it uses less digits than its factorization.

128894704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136608 (or 136602 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 128894704 is about 11353.1803473740. The cubic root of 128894704 is about 505.1399200564.

The spelling of 128894704 in words is "one hundred twenty-eight million, eight hundred ninety-four thousand, seven hundred four".