1440872856 has 48 divisors (see below), whose sum is σ = 3907074600. Its totient is φ = 479711232.

The previous prime is 1440872837. The next prime is 1440872861. The reversal of 1440872856 is 6582780441.

It is a super-2 number, since 2×1440872856² = 4152229174315193472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50200 + ... + 73496.

Almost surely, 2^1440872856 is an apocalyptic number.

It is an amenable number.

1440872856 is an abundant number, since it is smaller than the sum of its proper divisors (2466201744).

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

1440872856 is a wasteful number, since it uses less digits than its factorization.

1440872856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24168 (or 24161 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 1440872856 is about 37958.8310673551. The cubic root of 1440872856 is about 1129.4713521679.

The spelling of 1440872856 in words is "one billion, four hundred forty million, eight hundred seventy-two thousand, eight hundred fifty-six".