1623728672 has 24 divisors (see below), whose sum is σ = 3197754000. Its totient is φ = 811600704.

The previous prime is 1623728629. The next prime is 1623728681. The reversal of 1623728672 is 2768273261.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124979 + ... + 137357.

It is an arithmetic number, because the mean of its divisors is an integer number (133239750).

Almost surely, 2^1623728672 is an apocalyptic number.

It is an amenable number.

1623728672 is a deficient number, since it is larger than the sum of its proper divisors (1574025328).

1623728672 is a wasteful number, since it uses less digits than its factorization.

1623728672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16488 (or 16480 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 1623728672 is about 40295.5167729612. The cubic root of 1623728672 is about 1175.3606671901.

The spelling of 1623728672 in words is "one billion, six hundred twenty-three million, seven hundred twenty-eight thousand, six hundred seventy-two".