90296840 has 32 divisors (see below), whose sum is σ = 203537880. Its totient is φ = 36052992.

The previous prime is 90296803. The next prime is 90296887. The reversal of 90296840 is 4869209.

It can be written as a sum of positive squares in 4 ways, for example, as 31651876 + 58644964 = 5626^2 + 7658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90296794 and 90296803.

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, 24392 + ... + 27848.

Almost surely, 2^90296840 is an apocalyptic number.

It is an amenable number.

90296840 is an abundant number, since it is smaller than the sum of its proper divisors (113241040).

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

90296840 is a wasteful number, since it uses less digits than its factorization.

90296840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 90296840 is about 9502.4649433713. The cubic root of 90296840 is about 448.6326229376.

The spelling of 90296840 in words is "ninety million, two hundred ninety-six thousand, eight hundred forty".