85428700 has 36 divisors (see below), whose sum is σ = 211864912. Its totient is φ = 29289600.

The previous prime is 85428667. The next prime is 85428701. The reversal of 85428700 is 782458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85428701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60321 + ... + 61720.

Almost surely, 2^85428700 is an apocalyptic number.

It is an amenable number.

85428700 is an abundant number, since it is smaller than the sum of its proper divisors (126436212).

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

85428700 is a wasteful number, since it uses less digits than its factorization.

85428700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122062 (or 122055 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 85428700 is about 9242.7647378909. The cubic root of 85428700 is about 440.4209126453.

The spelling of 85428700 in words is "eighty-five million, four hundred twenty-eight thousand, seven hundred".