90031326 has 128 divisors (see below), whose sum is σ = 237081600. Its totient is φ = 22579200.

The previous prime is 90031321. The next prime is 90031343. The reversal of 90031326 is 62313009.

It is a super-2 number, since 2×90031326² = 16211279322636552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90031296 and 90031305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90031321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 928110 + ... + 928206.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^90031326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90031326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118540800).

90031326 is an abundant number, since it is smaller than the sum of its proper divisors (147050274).

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

90031326 is a wasteful number, since it uses less digits than its factorization.

90031326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 90031326 is about 9488.4838620298. The cubic root of 90031326 is about 448.1924628781.

The spelling of 90031326 in words is "ninety million, thirty-one thousand, three hundred twenty-six".