117944928 has 72 divisors (see below), whose sum is σ = 341778528. Its totient is φ = 38568192.

The previous prime is 117944921. The next prime is 117944941. The reversal of 117944928 is 829449711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×117944928² = 27822012081850368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117944921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11401 + ... + 19127.

It is an arithmetic number, because the mean of its divisors is an integer number (4746924).

Almost surely, 2^117944928 is an apocalyptic number.

117944928 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 117944928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170889264).

117944928 is an abundant number, since it is smaller than the sum of its proper divisors (223833600).

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

117944928 is a wasteful number, since it uses less digits than its factorization.

117944928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796 (or 7785 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 117944928 is about 10860.2453010970. The cubic root of 117944928 is about 490.4104959401.

The spelling of 117944928 in words is "one hundred seventeen million, nine hundred forty-four thousand, nine hundred twenty-eight".