86831290 has 32 divisors (see below), whose sum is σ = 192366720. Its totient is φ = 27480384.

The previous prime is 86831281. The next prime is 86831299. The reversal of 86831290 is 9213868.

It is an interprime number because it is at equal distance from previous prime (86831281) and next prime (86831299).

It is not an unprimeable number, because it can be changed into a prime (86831299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46800 + ... + 48619.

It is an arithmetic number, because the mean of its divisors is an integer number (6011460).

Almost surely, 2^86831290 is an apocalyptic number.

86831290 is an abundant number, since it is smaller than the sum of its proper divisors (105535430).

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

86831290 is a wasteful number, since it uses less digits than its factorization.

86831290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95446.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 86831290 is about 9318.3308591185. The cubic root of 86831290 is about 442.8181545876.

The spelling of 86831290 in words is "eighty-six million, eight hundred thirty-one thousand, two hundred ninety".