20462490 has 32 divisors (see below), whose sum is σ = 54567360. Its totient is φ = 5456592.

The previous prime is 20462459. The next prime is 20462521. The reversal of 20462490 is 9426402.

It is an interprime number because it is at equal distance from previous prime (20462459) and next prime (20462521).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37624 + ... + 38163.

It is an arithmetic number, because the mean of its divisors is an integer number (1705230).

Almost surely, 2^20462490 is an apocalyptic number.

20462490 is an abundant number, since it is smaller than the sum of its proper divisors (34104870).

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

20462490 is a wasteful number, since it uses less digits than its factorization.

20462490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75803 (or 75797 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20462490 is about 4523.5483859466. The cubic root of 20462490 is about 273.5181561139.

Adding to 20462490 its reverse (9426402), we get a palindrome (29888892).

The spelling of 20462490 in words is "twenty million, four hundred sixty-two thousand, four hundred ninety".