90437860 has 12 divisors (see below), whose sum is σ = 189919548. Its totient is φ = 36175136.

The previous prime is 90437833. The next prime is 90437887. The reversal of 90437860 is 6873409.

It is an interprime number because it is at equal distance from previous prime (90437833) and next prime (90437887).

It can be written as a sum of positive squares in 2 ways, for example, as 48135844 + 42302016 = 6938^2 + 6504^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2260927 + ... + 2260966.

It is an arithmetic number, because the mean of its divisors is an integer number (15826629).

Almost surely, 2^90437860 is an apocalyptic number.

It is an amenable number.

90437860 is an abundant number, since it is smaller than the sum of its proper divisors (99481688).

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

90437860 is a wasteful number, since it uses less digits than its factorization.

90437860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521902 (or 4521900 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 90437860 is about 9509.8822285031. The cubic root of 90437860 is about 448.8660503236.

The spelling of 90437860 in words is "ninety million, four hundred thirty-seven thousand, eight hundred sixty".