117021528 has 192 divisors, whose sum is σ = 365164800. Its totient is φ = 33592320.

The previous prime is 117021517. The next prime is 117021599. The reversal of 117021528 is 825120711.

117021528 is a `hidden beast` number, since 117 + 0 + 21 + 528 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1073538 + ... + 1073646.

It is an arithmetic number, because the mean of its divisors is an integer number (1901900).

Almost surely, 2^117021528 is an apocalyptic number.

117021528 is a gapful number since it is divisible by the number (18) 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 117021528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182582400).

117021528 is an abundant number, since it is smaller than the sum of its proper divisors (248143272).

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

117021528 is a wasteful number, since it uses less digits than its factorization.

117021528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 117021528 is about 10817.6489127721. The cubic root of 117021528 is about 489.1273207804.

The spelling of 117021528 in words is "one hundred seventeen million, twenty-one thousand, five hundred twenty-eight".