20023273438 has 32 divisors (see below), whose sum is σ = 37924982784. Its totient is φ = 7725455232.

The previous prime is 20023273433. The next prime is 20023273463. The reversal of 20023273438 is 83437232002.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023273433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1823470 + ... + 1834417.

It is an arithmetic number, because the mean of its divisors is an integer number (1185155712).

Almost surely, 2^20023273438 is an apocalyptic number.

20023273438 is a deficient number, since it is larger than the sum of its proper divisors (17901709346).

20023273438 is a wasteful number, since it uses less digits than its factorization.

20023273438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657936.

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 20023273438 in words is "twenty billion, twenty-three million, two hundred seventy-three thousand, four hundred thirty-eight".