1147021772 has 12 divisors (see below), whose sum is σ = 2161694976. Its totient is φ = 529394640.

The previous prime is 1147021741. The next prime is 1147021787. The reversal of 1147021772 is 2771207411.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11029004 + ... + 11029107.

It is an arithmetic number, because the mean of its divisors is an integer number (180141248).

Almost surely, 2^1147021772 is an apocalyptic number.

It is an amenable number.

1147021772 is a deficient number, since it is larger than the sum of its proper divisors (1014673204).

1147021772 is a wasteful number, since it uses less digits than its factorization.

1147021772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22058128 (or 22058126 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 1147021772 is about 33867.7098723843. The cubic root of 1147021772 is about 1046.7843485856.

The spelling of 1147021772 in words is "one billion, one hundred forty-seven million, twenty-one thousand, seven hundred seventy-two".