1147268920 has 32 divisors (see below), whose sum is σ = 2950120800. Its totient is φ = 393349248.

The previous prime is 1147268917. The next prime is 1147268951. The reversal of 1147268920 is 298627411.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048415 + ... + 2048974.

It is an arithmetic number, because the mean of its divisors is an integer number (92191275).

Almost surely, 2^1147268920 is an apocalyptic number.

1147268920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1147268920 is an abundant number, since it is smaller than the sum of its proper divisors (1802851880).

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

1147268920 is a wasteful number, since it uses less digits than its factorization.

1147268920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097407 (or 4097403 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1147268920 is about 33871.3584020482. The cubic root of 1147268920 is about 1046.8595264899.

The spelling of 1147268920 in words is "one billion, one hundred forty-seven million, two hundred sixty-eight thousand, nine hundred twenty".