117747420 has 48 divisors (see below), whose sum is σ = 376793088. Its totient is φ = 26913600.

The previous prime is 117747403. The next prime is 117747439. The reversal of 117747420 is 24747711.

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, 139756 + ... + 140595.

It is an arithmetic number, because the mean of its divisors is an integer number (7849856).

Almost surely, 2^117747420 is an apocalyptic number.

117747420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117747420 is an abundant number, since it is smaller than the sum of its proper divisors (259045668).

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

117747420 is a wasteful number, since it uses less digits than its factorization.

117747420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280370 (or 280368 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 117747420 is about 10851.1483263293. The cubic root of 117747420 is about 490.1365994282.

The spelling of 117747420 in words is "one hundred seventeen million, seven hundred forty-seven thousand, four hundred twenty".