1020688672 has 24 divisors (see below), whose sum is σ = 2043543600. Its totient is φ = 501693504.

The previous prime is 1020688651. The next prime is 1020688673. The reversal of 1020688672 is 2768860201.

1020688672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1020688673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268422 + ... + 272197.

It is an arithmetic number, because the mean of its divisors is an integer number (85147650).

Almost surely, 2^1020688672 is an apocalyptic number.

It is an amenable number.

1020688672 is an abundant number, since it is smaller than the sum of its proper divisors (1022854928).

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

1020688672 is an equidigital number, since it uses as much as digits as its factorization.

1020688672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540688 (or 540680 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1020688672 is about 31948.2186044856. The cubic root of 1020688672 is about 1006.8492052845.

The spelling of 1020688672 in words is "one billion, twenty million, six hundred eighty-eight thousand, six hundred seventy-two".