20054466 has 40 divisors (see below), whose sum is σ = 45534720. Its totient is φ = 6595992.

The previous prime is 20054431. The next prime is 20054467. The reversal of 20054466 is 66445002.

It is a happy number.

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 (20054467) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12015 + ... + 13581.

It is an arithmetic number, because the mean of its divisors is an integer number (1138368).

Almost surely, 2^20054466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20054466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22767360).

20054466 is an abundant number, since it is smaller than the sum of its proper divisors (25480254).

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

20054466 is a wasteful number, since it uses less digits than its factorization.

20054466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20054466 is about 4478.2212986855. The cubic root of 20054466 is about 271.6879441015.

Adding to 20054466 its reverse (66445002), we get a palindrome (86499468).

The spelling of 20054466 in words is "twenty million, fifty-four thousand, four hundred sixty-six".