20054790 has 128 divisors (see below), whose sum is σ = 62346240. Its totient is φ = 4548960.

The previous prime is 20054773. The next prime is 20054803. The reversal of 20054790 is 9745002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153025 + ... + 153155.

It is an arithmetic number, because the mean of its divisors is an integer number (487080).

Almost surely, 2^20054790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20054790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31173120).

20054790 is an abundant number, since it is smaller than the sum of its proper divisors (42291450).

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

20054790 is an equidigital number, since it uses as much as digits as its factorization.

20054790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 148 counting only the distinct ones).

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

The square root of 20054790 is about 4478.2574736163. The cubic root of 20054790 is about 271.6894072240.

Adding to 20054790 its reverse (9745002), we get a palindrome (29799792).

The spelling of 20054790 in words is "twenty million, fifty-four thousand, seven hundred ninety".