22492819 has 4 divisors (see below), whose sum is σ = 23815944. Its totient is φ = 21169696.

The previous prime is 22492817. The next prime is 22492823. The reversal of 22492819 is 91829422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22492819 - 2¹ = 22492817 is a prime.

It is a super-2 number, since 2×22492819² = 1011853813133522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22492817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661537 + ... + 661570.

It is an arithmetic number, because the mean of its divisors is an integer number (5953986).

Almost surely, 2^22492819 is an apocalyptic number.

22492819 is a deficient number, since it is larger than the sum of its proper divisors (1323125).

22492819 is a wasteful number, since it uses less digits than its factorization.

22492819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323124.

The product of its digits is 20736, while the sum is 37.

The square root of 22492819 is about 4742.6594859846. The cubic root of 22492819 is about 282.2807717809.

The spelling of 22492819 in words is "twenty-two million, four hundred ninety-two thousand, eight hundred nineteen".