917870480 has 20 divisors (see below), whose sum is σ = 2134049052. Its totient is φ = 367148160.

The previous prime is 917870479. The next prime is 917870491. The reversal of 917870480 is 84078719.

It can be written as a sum of positive squares in 2 ways, for example, as 149915536 + 767954944 = 12244^2 + 27712^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 5736611 + ... + 5736770.

Almost surely, 2^917870480 is an apocalyptic number.

It is an amenable number.

917870480 is an abundant number, since it is smaller than the sum of its proper divisors (1216178572).

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

917870480 is a wasteful number, since it uses less digits than its factorization.

917870480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473394 (or 11473388 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 917870480 is about 30296.3773411938. The cubic root of 917870480 is about 971.8378307694.

The spelling of 917870480 in words is "nine hundred seventeen million, eight hundred seventy thousand, four hundred eighty".