86252720 has 20 divisors (see below), whose sum is σ = 200537760. Its totient is φ = 34501056.

The previous prime is 86252701. The next prime is 86252729. The reversal of 86252720 is 2725268.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (86252729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539000 + ... + 539159.

It is an arithmetic number, because the mean of its divisors is an integer number (10026888).

Almost surely, 2^86252720 is an apocalyptic number.

86252720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86252720 is an abundant number, since it is smaller than the sum of its proper divisors (114285040).

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

86252720 is a wasteful number, since it uses less digits than its factorization.

86252720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078172 (or 1078166 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 86252720 is about 9287.2342492262. The cubic root of 86252720 is about 441.8324405993.

Adding to 86252720 its reverse (2725268), we get a palindrome (88977988).

The spelling of 86252720 in words is "eighty-six million, two hundred fifty-two thousand, seven hundred twenty".