1622857456 has 40 divisors (see below), whose sum is σ = 3494870064. Its totient is φ = 723740160.

The previous prime is 1622857447. The next prime is 1622857459. The reversal of 1622857456 is 6547582261.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622857459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77661 + ... + 96316.

Almost surely, 2^1622857456 is an apocalyptic number.

1622857456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1622857456 is an abundant number, since it is smaller than the sum of its proper divisors (1872012608).

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

1622857456 is a wasteful number, since it uses less digits than its factorization.

1622857456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174049 (or 174043 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 1622857456 is about 40284.7049883700. The cubic root of 1622857456 is about 1175.1504152695.

The spelling of 1622857456 in words is "one billion, six hundred twenty-two million, eight hundred fifty-seven thousand, four hundred fifty-six".