20790054 has 16 divisors (see below), whose sum is σ = 46200240. Its totient is φ = 6930000.

The previous prime is 20790043. The next prime is 20790059. The reversal of 20790054 is 45009702.

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 (20790059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192447 + ... + 192554.

It is an arithmetic number, because the mean of its divisors is an integer number (2887515).

Almost surely, 2^20790054 is an apocalyptic number.

20790054 is an abundant number, since it is smaller than the sum of its proper divisors (25410186).

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

20790054 is a wasteful number, since it uses less digits than its factorization.

20790054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385012 (or 385006 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20790054 is about 4559.6111676326. The cubic root of 20790054 is about 274.9699316987.

Adding to 20790054 its reverse (45009702), we get a palindrome (65799756).

The spelling of 20790054 in words is "twenty million, seven hundred ninety thousand, fifty-four".