86412720 has 40 divisors (see below), whose sum is σ = 267880176. Its totient is φ = 23043328.

The previous prime is 86412691. The next prime is 86412731. The reversal of 86412720 is 2721468.

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179787 + ... + 180266.

Almost surely, 2^86412720 is an apocalyptic number.

86412720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86412720 is an abundant number, since it is smaller than the sum of its proper divisors (181467456).

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

86412720 is a wasteful number, since it uses less digits than its factorization.

86412720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360069 (or 360063 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 86412720 is about 9295.8442327741. The cubic root of 86412720 is about 442.1054736244.

The spelling of 86412720 in words is "eighty-six million, four hundred twelve thousand, seven hundred twenty".