20042964 has 30 divisors (see below), whose sum is σ = 52397114. Its totient is φ = 6680880.

The previous prime is 20042951. The next prime is 20042993. The reversal of 20042964 is 46924002.

It can be written as a sum of positive squares in only one way, i.e., 16402500 + 3640464 = 4050^2 + 1908^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30607 + ... + 31254.

Almost surely, 2^20042964 is an apocalyptic number.

It is an amenable number.

20042964 is an abundant number, since it is smaller than the sum of its proper divisors (32354150).

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

20042964 is a wasteful number, since it uses less digits than its factorization.

20042964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61877 (or 61866 counting only the distinct ones).

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

The square root of 20042964 is about 4476.9368992649. The cubic root of 20042964 is about 271.6359930407.

Adding to 20042964 its reverse (46924002), we get a palindrome (66966966).

The spelling of 20042964 in words is "twenty million, forty-two thousand, nine hundred sixty-four".