90872730240 has 128 divisors (see below), whose sum is σ = 306695574720. Its totient is φ = 22807265280.

The previous prime is 90872730227. The next prime is 90872730283. The reversal of 90872730240 is 4203727809.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 90872730192 and 90872730201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1359406 + ... + 1424685.

Almost surely, 2^90872730240 is an apocalyptic number.

It is an amenable number.

90872730240 is an abundant number, since it is smaller than the sum of its proper divisors (215822844480).

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

90872730240 is a wasteful number, since it uses less digits than its factorization.

90872730240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784130 (or 2784118 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 90872730240 in words is "ninety billion, eight hundred seventy-two million, seven hundred thirty thousand, two hundred forty".