22994890 has 8 divisors (see below), whose sum is σ = 41390820. Its totient is φ = 9197952.

The previous prime is 22994887. The next prime is 22994893. The reversal of 22994890 is 9849922.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22994887) and next prime (22994893).

It can be written as a sum of positive squares in 2 ways, for example, as 22953681 + 41209 = 4791^2 + 203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22994890² = 1057529932224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22994893) 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 3 ways as a sum of consecutive naturals, for example, 1149735 + ... + 1149754.

Almost surely, 2^22994890 is an apocalyptic number.

22994890 is a deficient number, since it is larger than the sum of its proper divisors (18395930).

22994890 is a wasteful number, since it uses less digits than its factorization.

22994890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299496.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 22994890 is about 4795.2987393905. The cubic root of 22994890 is about 284.3656353234.

The spelling of 22994890 in words is "twenty-two million, nine hundred ninety-four thousand, eight hundred ninety".