90667290 has 128 divisors (see below), whose sum is σ = 266872320. Its totient is φ = 19243008.

The previous prime is 90667271. The next prime is 90667301. The reversal of 90667290 is 9276609.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 389014 + ... + 389246.

It is an arithmetic number, because the mean of its divisors is an integer number (2084940).

Almost surely, 2^90667290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90667290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133436160).

90667290 is an abundant number, since it is smaller than the sum of its proper divisors (176205030).

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

90667290 is a wasteful number, since it uses less digits than its factorization.

90667290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 90667290 is about 9521.9373028812. The cubic root of 90667290 is about 449.2453029028.

The spelling of 90667290 in words is "ninety million, six hundred sixty-seven thousand, two hundred ninety".