86091240 has 32 divisors (see below), whose sum is σ = 258274080. Its totient is φ = 22957632.

The previous prime is 86091233. The next prime is 86091241. The reversal of 86091240 is 4219068.

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

It is a junction number, because it is equal to n+sod(n) for n = 86091198 and 86091207.

It is not an unprimeable number, because it can be changed into a prime (86091241) 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, 358594 + ... + 358833.

It is an arithmetic number, because the mean of its divisors is an integer number (8071065).

Almost surely, 2^86091240 is an apocalyptic number.

It is an amenable number.

86091240 is an abundant number, since it is smaller than the sum of its proper divisors (172182840).

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

86091240 is a wasteful number, since it uses less digits than its factorization.

86091240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717441 (or 717437 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 86091240 is about 9278.5365225341. The cubic root of 86091240 is about 441.5565394506.

The spelling of 86091240 in words is "eighty-six million, ninety-one thousand, two hundred forty".