85511730 has 32 divisors (see below), whose sum is σ = 205659648. Its totient is φ = 22755200.

The previous prime is 85511711. The next prime is 85511731. The reversal of 85511730 is 3711558.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (85511731) 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, 12895 + ... + 18365.

It is an arithmetic number, because the mean of its divisors is an integer number (6426864).

Almost surely, 2^85511730 is an apocalyptic number.

85511730 is an abundant number, since it is smaller than the sum of its proper divisors (120147918).

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

85511730 is a wasteful number, since it uses less digits than its factorization.

85511730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6002.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 85511730 is about 9247.2552684567. The cubic root of 85511730 is about 440.5635513122.

The spelling of 85511730 in words is "eighty-five million, five hundred eleven thousand, seven hundred thirty".