8572720 has 40 divisors (see below), whose sum is σ = 21467376. Its totient is φ = 3164928.

The previous prime is 8572699. The next prime is 8572727. The reversal of 8572720 is 272758.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (8572727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3082 + ... + 5161.

Almost surely, 2^8572720 is an apocalyptic number.

8572720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8572720 is an abundant number, since it is smaller than the sum of its proper divisors (12894656).

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

8572720 is a wasteful number, since it uses less digits than its factorization.

8572720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269 (or 8263 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 8572720 is about 2927.9207639552. The cubic root of 8572720 is about 204.6630992221.

The spelling of 8572720 in words is "eight million, five hundred seventy-two thousand, seven hundred twenty".