86256240 has 80 divisors (see below), whose sum is σ = 305599488. Its totient is φ = 19715328.

The previous prime is 86256223. The next prime is 86256263. The reversal of 86256240 is 4265268.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 23992 + ... + 27351.

Almost surely, 2^86256240 is an apocalyptic number.

86256240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86256240 is an abundant number, since it is smaller than the sum of its proper divisors (219343248).

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

86256240 is a wasteful number, since it uses less digits than its factorization.

86256240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51366 (or 51360 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 86256240 is about 9287.4237547341. The cubic root of 86256240 is about 441.8384509568.

The spelling of 86256240 in words is "eighty-six million, two hundred fifty-six thousand, two hundred forty".