22920429 has 16 divisors (see below), whose sum is σ = 34993280. Its totient is φ = 13072320.

The previous prime is 22920409. The next prime is 22920431. The reversal of 22920429 is 92402922.

It is not a de Polignac number, because 22920429 - 2⁸ = 22920173 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22920396 and 22920405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22920409) 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, 20907 + ... + 21975.

It is an arithmetic number, because the mean of its divisors is an integer number (2187080).

Almost surely, 2^22920429 is an apocalyptic number.

It is an amenable number.

22920429 is a deficient number, since it is larger than the sum of its proper divisors (12072851).

22920429 is a wasteful number, since it uses less digits than its factorization.

22920429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 22920429 is about 4787.5284855549. The cubic root of 22920429 is about 284.0583634928.

The spelling of 22920429 in words is "twenty-two million, nine hundred twenty thousand, four hundred twenty-nine".