86522240 has 192 divisors, whose sum is σ = 251164800. Its totient is φ = 28385280.

The previous prime is 86522237. The next prime is 86522269. The reversal of 86522240 is 4222568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 972116 + ... + 972204.

It is an arithmetic number, because the mean of its divisors is an integer number (1308150).

Almost surely, 2^86522240 is an apocalyptic number.

86522240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

86522240 is the 7595-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86522240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125582400).

86522240 is an abundant number, since it is smaller than the sum of its proper divisors (164642560).

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

86522240 is a wasteful number, since it uses less digits than its factorization.

86522240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 86522240 is about 9301.7331718342. The cubic root of 86522240 is about 442.2921704834.

The spelling of 86522240 in words is "eighty-six million, five hundred twenty-two thousand, two hundred forty".