20012774 has 16 divisors (see below), whose sum is σ = 31937328. Its totient is φ = 9372672.

The previous prime is 20012771. The next prime is 20012801. The reversal of 20012774 is 47721002.

It is a super-2 number, since 2×20012774² = 801022246350152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6422 + ... + 9014.

It is an arithmetic number, because the mean of its divisors is an integer number (1996083).

Almost surely, 2^20012774 is an apocalyptic number.

20012774 is a deficient number, since it is larger than the sum of its proper divisors (11924554).

20012774 is a wasteful number, since it uses less digits than its factorization.

20012774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20012774 is about 4473.5639036455. The cubic root of 20012774 is about 271.4995393114.

Adding to 20012774 its reverse (47721002), we get a palindrome (67733776).

The spelling of 20012774 in words is "twenty million, twelve thousand, seven hundred seventy-four".