90682288 has 40 divisors (see below), whose sum is σ = 185724720. Its totient is φ = 42773760.

The previous prime is 90682271. The next prime is 90682309. The reversal of 90682288 is 88228609.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 95898 + ... + 96838.

It is an arithmetic number, because the mean of its divisors is an integer number (4643118).

Almost surely, 2^90682288 is an apocalyptic number.

90682288 is the 6023-rd heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90682288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92862360).

90682288 is an abundant number, since it is smaller than the sum of its proper divisors (95042432).

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

90682288 is a wasteful number, since it uses less digits than its factorization.

90682288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 90682288 is about 9522.7248201342. The cubic root of 90682288 is about 449.2700726206.

The spelling of 90682288 in words is "ninety million, six hundred eighty-two thousand, two hundred eighty-eight".