90292940 has 48 divisors (see below), whose sum is σ = 208293120. Its totient is φ = 32725440.

The previous prime is 90292919. The next prime is 90292949. The reversal of 90292940 is 4929209.

It is a self number, because there is not a number n which added to its sum of digits gives 90292940.

It is not an unprimeable number, because it can be changed into a prime (90292949) 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, 3575 + ... + 13905.

It is an arithmetic number, because the mean of its divisors is an integer number (4339440).

Almost surely, 2^90292940 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 90292940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104146560).

90292940 is an abundant number, since it is smaller than the sum of its proper divisors (118000180).

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

90292940 is a wasteful number, since it uses less digits than its factorization.

90292940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10382 (or 10380 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 90292940 is about 9502.2597312429. The cubic root of 90292940 is about 448.6261638986.

The spelling of 90292940 in words is "ninety million, two hundred ninety-two thousand, nine hundred forty".