85109628 has 24 divisors (see below), whose sum is σ = 199086160. Its totient is φ = 28298880.

The previous prime is 85109587. The next prime is 85109653. The reversal of 85109628 is 82690158.

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, 3763 + ... + 13578.

Almost surely, 2^85109628 is an apocalyptic number.

It is an amenable number.

85109628 is an abundant number, since it is smaller than the sum of its proper divisors (113976532).

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

85109628 is a wasteful number, since it uses less digits than its factorization.

85109628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17757 (or 17755 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 85109628 is about 9225.4879545745. The cubic root of 85109628 is about 439.8719117517.

The spelling of 85109628 in words is "eighty-five million, one hundred nine thousand, six hundred twenty-eight".