1180031328 has 432 divisors, whose sum is σ = 4287366720. Its totient is φ = 317447424.

The previous prime is 1180031323. The next prime is 1180031341. The reversal of 1180031328 is 8231300811.

It is a tau number, because it is divible by the number of its divisors (432).

It is a super-2 number, since 2×1180031328² = 2784947870122887168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180031323) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7239375 + ... + 7239537.

It is an arithmetic number, because the mean of its divisors is an integer number (9924460).

Almost surely, 2^1180031328 is an apocalyptic number.

1180031328 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 1180031328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2143683360).

1180031328 is an abundant number, since it is smaller than the sum of its proper divisors (3107335392).

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

1180031328 is a wasteful number, since it uses less digits than its factorization.

1180031328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1180031328 is about 34351.5840682784. The cubic root of 1180031328 is about 1056.7311568654.

The spelling of 1180031328 in words is "one billion, one hundred eighty million, thirty-one thousand, three hundred twenty-eight".