916634880 has 432 divisors, whose sum is σ = 3767697024. Its totient is φ = 209018880.

The previous prime is 916634857. The next prime is 916634891. The reversal of 916634880 is 88436619.

916634880 is a `hidden beast` number, since 9 + 1 + 6 + 634 + 8 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a super-2 number, since 2×916634880² = 1680439006465228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2177070 + ... + 2177490.

Almost surely, 2^916634880 is an apocalyptic number.

916634880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 916634880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1883848512).

916634880 is an abundant number, since it is smaller than the sum of its proper divisors (2851062144).

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

916634880 is an equidigital number, since it uses as much as digits as its factorization.

916634880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 916634880 is about 30275.9785969009. The cubic root of 916634880 is about 971.4015520578.

The spelling of 916634880 in words is "nine hundred sixteen million, six hundred thirty-four thousand, eight hundred eighty".