20090466 has 24 divisors (see below), whose sum is σ = 47487024. Its totient is φ = 6087960.

The previous prime is 20090437. The next prime is 20090471. The reversal of 20090466 is 66409002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50536 + ... + 50931.

It is an arithmetic number, because the mean of its divisors is an integer number (1978626).

Almost surely, 2^20090466 is an apocalyptic number.

20090466 is an abundant number, since it is smaller than the sum of its proper divisors (27396558).

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

20090466 is a wasteful number, since it uses less digits than its factorization.

20090466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101486 (or 101483 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20090466 is about 4482.2389494537. The cubic root of 20090466 is about 271.8504169608.

Adding to 20090466 its reverse (66409002), we get a palindrome (86499468).

The spelling of 20090466 in words is "twenty million, ninety thousand, four hundred sixty-six".