85428910 has 32 divisors (see below), whose sum is σ = 186079680. Its totient is φ = 27566592.

The previous prime is 85428869. The next prime is 85428911. The reversal of 85428910 is 1982458.

It is a self number, because there is not a number n which added to its sum of digits gives 85428910.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85428911) 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, 34705 + ... + 37084.

It is an arithmetic number, because the mean of its divisors is an integer number (5814990).

Almost surely, 2^85428910 is an apocalyptic number.

85428910 is an abundant number, since it is smaller than the sum of its proper divisors (100650770).

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

85428910 is a wasteful number, since it uses less digits than its factorization.

85428910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71820.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 85428910 is about 9242.7760981212. The cubic root of 85428910 is about 440.4212735245.

The spelling of 85428910 in words is "eighty-five million, four hundred twenty-eight thousand, nine hundred ten".