1440252772 has 24 divisors (see below), whose sum is σ = 2941795584. Its totient is φ = 604117632.

The previous prime is 1440252757. The next prime is 1440252817. The reversal of 1440252772 is 2772520441.

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, 545893 + ... + 548524.

It is an arithmetic number, because the mean of its divisors is an integer number (122574816).

Almost surely, 2^1440252772 is an apocalyptic number.

It is an amenable number.

1440252772 is an abundant number, since it is smaller than the sum of its proper divisors (1501542812).

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

1440252772 is a wasteful number, since it uses less digits than its factorization.

1440252772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094475 (or 1094473 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 1440252772 is about 37950.6623394112. The cubic root of 1440252772 is about 1129.3093051134.

The spelling of 1440252772 in words is "one billion, four hundred forty million, two hundred fifty-two thousand, seven hundred seventy-two".