1179451728 has 120 divisors (see below), whose sum is σ = 4062601088. Its totient is φ = 311060736.

The previous prime is 1179451727. The next prime is 1179451739. The reversal of 1179451728 is 8271549711.

It is a happy number.

1179451728 is a `hidden beast` number, since 1 + 179 + 451 + 7 + 28 = 666.

It is a super-2 number, since 2×1179451728² = 2782212757364371968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1179451723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31900 + ... + 58107.

Almost surely, 2^1179451728 is an apocalyptic number.

1179451728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1179451728 is an abundant number, since it is smaller than the sum of its proper divisors (2883149360).

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

1179451728 is a wasteful number, since it uses less digits than its factorization.

1179451728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90041 (or 90032 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 1179451728 is about 34343.1467399247. The cubic root of 1179451728 is about 1056.5581157861.

The spelling of 1179451728 in words is "one billion, one hundred seventy-nine million, four hundred fifty-one thousand, seven hundred twenty-eight".