22851409 has 16 divisors (see below), whose sum is σ = 26725248. Its totient is φ = 19135872.

The previous prime is 22851403. The next prime is 22851457. The reversal of 22851409 is 90415822.

It is not a de Polignac number, because 22851409 - 2¹⁹ = 22327121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22851403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100554 + ... + 100780.

It is an arithmetic number, because the mean of its divisors is an integer number (1670328).

Almost surely, 2^22851409 is an apocalyptic number.

It is an amenable number.

22851409 is a deficient number, since it is larger than the sum of its proper divisors (3873839).

22851409 is a wasteful number, since it uses less digits than its factorization.

22851409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 22851409 is about 4780.3147385920. The cubic root of 22851409 is about 283.7729496856.

The spelling of 22851409 in words is "twenty-two million, eight hundred fifty-one thousand, four hundred nine".