1047320964 has 144 divisors (see below), whose sum is σ = 2962814400. Its totient is φ = 310480128.

The previous prime is 1047320917. The next prime is 1047320971. The reversal of 1047320964 is 4690237401.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 733219 + ... + 734645.

It is an arithmetic number, because the mean of its divisors is an integer number (20575100).

Almost surely, 2^1047320964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047320964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481407200).

1047320964 is an abundant number, since it is smaller than the sum of its proper divisors (1915493436).

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

1047320964 is a wasteful number, since it uses less digits than its factorization.

1047320964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1047320964 is about 32362.3386670370. The cubic root of 1047320964 is about 1015.5311880643.

The spelling of 1047320964 in words is "one billion, forty-seven million, three hundred twenty thousand, nine hundred sixty-four".