20390569024 has 28 divisors (see below), whose sum is σ = 46242898624. Its totient is φ = 8738815104.

The previous prime is 20390569019. The next prime is 20390569027. The reversal of 20390569024 is 42096509302.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (20390569027) 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, 22756884 + ... + 22757779.

Almost surely, 2^20390569024 is an apocalyptic number.

It is an amenable number.

20390569024 is an abundant number, since it is smaller than the sum of its proper divisors (25852329600).

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

20390569024 is an equidigital number, since it uses as much as digits as its factorization.

20390569024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45514682 (or 45514672 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 20390569024 in words is "twenty billion, three hundred ninety million, five hundred sixty-nine thousand, twenty-four".