84087172 has 48 divisors (see below), whose sum is σ = 166747392. Its totient is φ = 36812160.

The previous prime is 84087161. The next prime is 84087181. The reversal of 84087172 is 27178048.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199522 + ... + 199942.

It is an arithmetic number, because the mean of its divisors is an integer number (3473904).

Almost surely, 2^84087172 is an apocalyptic number.

It is an amenable number.

84087172 is a deficient number, since it is larger than the sum of its proper divisors (82660220).

84087172 is a wasteful number, since it uses less digits than its factorization.

84087172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 84087172 is about 9169.9057792324. The cubic root of 84087172 is about 438.1033582173.

The spelling of 84087172 in words is "eighty-four million, eighty-seven thousand, one hundred seventy-two".