22790921 has 8 divisors (see below), whose sum is σ = 23879424. Its totient is φ = 21724560.

The previous prime is 22790917. The next prime is 22790939. The reversal of 22790921 is 12909722.

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 22790921 - 2² = 22790917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22790981) 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, 3410 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (2984928).

Almost surely, 2^22790921 is an apocalyptic number.

It is an amenable number.

22790921 is a deficient number, since it is larger than the sum of its proper divisors (1088503).

22790921 is a wasteful number, since it uses less digits than its factorization.

22790921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11071.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 22790921 is about 4773.9837662062. The cubic root of 22790921 is about 283.5223447784.

The spelling of 22790921 in words is "twenty-two million, seven hundred ninety thousand, nine hundred twenty-one".