90928992 has 96 divisors (see below), whose sum is σ = 297609984. Its totient is φ = 23616000.

The previous prime is 90928991. The next prime is 90928997. The reversal of 90928992 is 29982909.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×90928992² = 16536163172272128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90928991) 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, 1242 + ... + 13542.

It is an arithmetic number, because the mean of its divisors is an integer number (3100104).

Almost surely, 2^90928992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90928992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148804992).

90928992 is an abundant number, since it is smaller than the sum of its proper divisors (206680992).

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

90928992 is a wasteful number, since it uses less digits than its factorization.

90928992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12332 (or 12324 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 90928992 is about 9535.6694573585. The cubic root of 90928992 is about 449.6771214740.

The spelling of 90928992 in words is "ninety million, nine hundred twenty-eight thousand, nine hundred ninety-two".