20112490 has 16 divisors (see below), whose sum is σ = 37370880. Its totient is φ = 7785360.

The previous prime is 20112473. The next prime is 20112503. The reversal of 20112490 is 9421102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32130 + ... + 32749.

It is an arithmetic number, because the mean of its divisors is an integer number (2335680).

Almost surely, 2^20112490 is an apocalyptic number.

20112490 is a deficient number, since it is larger than the sum of its proper divisors (17258390).

20112490 is a wasteful number, since it uses less digits than its factorization.

20112490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64917.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 20112490 is about 4484.6950843954. The cubic root of 20112490 is about 271.9497185747.

Adding to 20112490 its reverse (9421102), we get a palindrome (29533592).

It can be divided in two parts, 20112 and 490, that added together give a palindrome (20602).

The spelling of 20112490 in words is "twenty million, one hundred twelve thousand, four hundred ninety".