117526640 has 80 divisors (see below), whose sum is σ = 340692480. Its totient is φ = 36629760.

The previous prime is 117526639. The next prime is 117526657. The reversal of 117526640 is 46625711.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×117526640² = 27625022219379200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117526597 and 117526606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3380 + ... + 15699.

It is an arithmetic number, because the mean of its divisors is an integer number (4258656).

Almost surely, 2^117526640 is an apocalyptic number.

117526640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117526640 is an abundant number, since it is smaller than the sum of its proper divisors (223165840).

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

117526640 is a wasteful number, since it uses less digits than its factorization.

117526640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19110 (or 19104 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 117526640 is about 10840.9704362663. The cubic root of 117526640 is about 489.8300674102.

The spelling of 117526640 in words is "one hundred seventeen million, five hundred twenty-six thousand, six hundred forty".