128426894 has 16 divisors (see below), whose sum is σ = 201307680. Its totient is φ = 61332480.

The previous prime is 128426869. The next prime is 128426923. The reversal of 128426894 is 498624821.

It is a congruent number.

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, 38942 + ... + 42110.

It is an arithmetic number, because the mean of its divisors is an integer number (12581730).

Almost surely, 2^128426894 is an apocalyptic number.

128426894 is a deficient number, since it is larger than the sum of its proper divisors (72880786).

128426894 is a wasteful number, since it uses less digits than its factorization.

128426894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075.

The product of its digits is 221184, while the sum is 44.

The square root of 128426894 is about 11332.5590225686. The cubic root of 128426894 is about 504.5280615304.

The spelling of 128426894 in words is "one hundred twenty-eight million, four hundred twenty-six thousand, eight hundred ninety-four".