20924319 has 16 divisors (see below), whose sum is σ = 31352832. Its totient is φ = 12316128.

The previous prime is 20924317. The next prime is 20924327. The reversal of 20924319 is 91342902.

It is not a de Polignac number, because 20924319 - 2¹ = 20924317 is a prime.

It is a super-2 number, since 2×20924319² = 875654251227522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20924311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10767 + ... + 12560.

It is an arithmetic number, because the mean of its divisors is an integer number (1959552).

Almost surely, 2^20924319 is an apocalyptic number.

20924319 is a deficient number, since it is larger than the sum of its proper divisors (10428513).

20924319 is a wasteful number, since it uses less digits than its factorization.

20924319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23366.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20924319 is about 4574.3107677551. The cubic root of 20924319 is about 275.5605930822.

The spelling of 20924319 in words is "twenty million, nine hundred twenty-four thousand, three hundred nineteen".