1264622632 has 64 divisors (see below), whose sum is σ = 2922998400. Its totient is φ = 499495680.

The previous prime is 1264622609. The next prime is 1264622669. The reversal of 1264622632 is 2362264621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705994 + ... + 707782.

It is an arithmetic number, because the mean of its divisors is an integer number (45671850).

Almost surely, 2^1264622632 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 1264622632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461499200).

1264622632 is an abundant number, since it is smaller than the sum of its proper divisors (1658375768).

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

1264622632 is a wasteful number, since it uses less digits than its factorization.

1264622632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786 (or 2782 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 1264622632 is about 35561.5330378205. The cubic root of 1264622632 is about 1081.4015388885.

The spelling of 1264622632 in words is "one billion, two hundred sixty-four million, six hundred twenty-two thousand, six hundred thirty-two".