20924013 has 8 divisors (see below), whose sum is σ = 30434976. Its totient is φ = 12681200.

The previous prime is 20924011. The next prime is 20924021. The reversal of 20924013 is 31042902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20924013 - 2¹ = 20924011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20924011) 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, 316998 + ... + 317063.

It is an arithmetic number, because the mean of its divisors is an integer number (3804372).

Almost surely, 2^20924013 is an apocalyptic number.

It is an amenable number.

20924013 is a deficient number, since it is larger than the sum of its proper divisors (9510963).

20924013 is a wasteful number, since it uses less digits than its factorization.

20924013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634075.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20924013 is about 4574.2773199709. The cubic root of 20924013 is about 275.5592497975.

Adding to 20924013 its reverse (31042902), we get a palindrome (51966915).

It can be divided in two parts, 2092 and 4013, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 20924013 in words is "twenty million, nine hundred twenty-four thousand, thirteen".