117672228 has 36 divisors (see below), whose sum is σ = 297787308. Its totient is φ = 39179520.

The previous prime is 117672193. The next prime is 117672229. The reversal of 117672228 is 822276711.

It can be written as a sum of positive squares in 2 ways, for example, as 85045284 + 32626944 = 9222^2 + 5712^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 117672192 and 117672201.

It is not an unprimeable number, because it can be changed into a prime (117672229) 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, 50448 + ... + 52728.

Almost surely, 2^117672228 is an apocalyptic number.

117672228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

117672228 is an abundant number, since it is smaller than the sum of its proper divisors (180115080).

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

117672228 is a wasteful number, since it uses less digits than its factorization.

117672228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724 (or 3719 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 117672228 is about 10847.6830705916. The cubic root of 117672228 is about 490.0322455525.

The spelling of 117672228 in words is "one hundred seventeen million, six hundred seventy-two thousand, two hundred twenty-eight".