116621520 has 40 divisors (see below), whose sum is σ = 361527456. Its totient is φ = 31099008.

The previous prime is 116621503. The next prime is 116621539. The reversal of 116621520 is 25126611.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×116621520² = 27201157854220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 242722 + ... + 243201.

Almost surely, 2^116621520 is an apocalyptic number.

116621520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116621520 is an abundant number, since it is smaller than the sum of its proper divisors (244905936).

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

116621520 is a wasteful number, since it uses less digits than its factorization.

116621520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485939 (or 485933 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 116621520 is about 10799.1444105540. The cubic root of 116621520 is about 488.5693659012.

The spelling of 116621520 in words is "one hundred sixteen million, six hundred twenty-one thousand, five hundred twenty".