94128881 has 16 divisors (see below), whose sum is σ = 124260480. Its totient is φ = 69031680.

The previous prime is 94128841. The next prime is 94128899. The reversal of 94128881 is 18882149.

It is a cyclic number.

It is not a de Polignac number, because 94128881 - 2¹⁰ = 94127857 is a prime.

It is a super-2 number, since 2×94128881² = 17720492476624322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (94128841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34646 + ... + 37263.

It is an arithmetic number, because the mean of its divisors is an integer number (7766280).

Almost surely, 2^94128881 is an apocalyptic number.

It is an amenable number.

94128881 is a deficient number, since it is larger than the sum of its proper divisors (30131599).

94128881 is a wasteful number, since it uses less digits than its factorization.

94128881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71944.

The product of its digits is 36864, while the sum is 41.

The square root of 94128881 is about 9702.0039682532. The cubic root of 94128881 is about 454.8913011685.

The spelling of 94128881 in words is "ninety-four million, one hundred twenty-eight thousand, eight hundred eighty-one".