117657450 has 72 divisors (see below), whose sum is σ = 322890048. Its totient is φ = 30702240.

The previous prime is 117657401. The next prime is 117657451. The reversal of 117657450 is 54756711.

117657450 is a `hidden beast` number, since 11 + 76 + 574 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117657451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18369 + ... + 23931.

It is an arithmetic number, because the mean of its divisors is an integer number (4484584).

Almost surely, 2^117657450 is an apocalyptic number.

117657450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117657450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161445024).

117657450 is an abundant number, since it is smaller than the sum of its proper divisors (205232598).

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

117657450 is a wasteful number, since it uses less digits than its factorization.

117657450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 117657450 is about 10847.0018899233. The cubic root of 117657450 is about 490.0117309423.

The spelling of 117657450 in words is "one hundred seventeen million, six hundred fifty-seven thousand, four hundred fifty".