1157880 has 32 divisors (see below), whose sum is σ = 3474000. Its totient is φ = 308736.

The previous prime is 1157873. The next prime is 1157899. The reversal of 1157880 is 887511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4705 + ... + 4944.

2^1157880 is an apocalyptic number.

1157880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157880 is an abundant number, since it is smaller than the sum of its proper divisors (2316120).

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

1157880 is a wasteful number, since it uses less digits than its factorization.

1157880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9663 (or 9659 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 1157880 is about 1076.0483260523. The cubic root of 1157880 is about 105.0077091845.

The spelling of 1157880 in words is "one million, one hundred fifty-seven thousand, eight hundred eighty".