20390054022 has 80 divisors (see below), whose sum is σ = 51793101360. Its totient is φ = 5943647808.

The previous prime is 20390054021. The next prime is 20390054033. The reversal of 20390054022 is 22045009302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20390054021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 214773 + ... + 294800.

It is an arithmetic number, because the mean of its divisors is an integer number (647413767).

Almost surely, 2^20390054022 is an apocalyptic number.

20390054022 is an abundant number, since it is smaller than the sum of its proper divisors (31403047338).

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

20390054022 is a wasteful number, since it uses less digits than its factorization.

20390054022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509619 (or 509610 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 20390054022 in words is "twenty billion, three hundred ninety million, fifty-four thousand, twenty-two".