117521460 has 144 divisors (see below), whose sum is σ = 428937600. Its totient is φ = 25443072.

The previous prime is 117521419. The next prime is 117521461. The reversal of 117521460 is 64125711.

It is a happy number.

It is a super-2 number, since 2×117521460² = 27622587121063200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117521461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21486 + ... + 26394.

Almost surely, 2^117521460 is an apocalyptic number.

117521460 is a gapful number since it is divisible by the number (10) 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 117521460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214468800).

117521460 is an abundant number, since it is smaller than the sum of its proper divisors (311416140).

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

117521460 is a wasteful number, since it uses less digits than its factorization.

117521460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950 (or 4945 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 117521460 is about 10840.7315251324. The cubic root of 117521460 is about 489.8228708659.

The spelling of 117521460 in words is "one hundred seventeen million, five hundred twenty-one thousand, four hundred sixty".