118169728 has 16 divisors (see below), whose sum is σ = 235416510. Its totient is φ = 59084800.

The previous prime is 118169713. The next prime is 118169783. The reversal of 118169728 is 827961811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83028544 + 35141184 = 9112^2 + 5928^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461473 + ... + 461728.

Almost surely, 2^118169728 is an apocalyptic number.

It is an amenable number.

118169728 is a deficient number, since it is larger than the sum of its proper divisors (117246782).

118169728 is an frugal number, since it uses more digits than its factorization.

118169728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923215 (or 923203 counting only the distinct ones).

The product of its digits is 48384, while the sum is 43.

The square root of 118169728 is about 10870.5900483828. The cubic root of 118169728 is about 490.7218681331.

The spelling of 118169728 in words is "one hundred eighteen million, one hundred sixty-nine thousand, seven hundred twenty-eight".