22913890 has 8 divisors (see below), whose sum is σ = 41245020. Its totient is φ = 9165552.

The previous prime is 22913887. The next prime is 22913899. The reversal of 22913890 is 9831922.

It can be written as a sum of positive squares in 2 ways, for example, as 22439169 + 474721 = 4737^2 + 689^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22913899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145685 + ... + 1145704.

Almost surely, 2^22913890 is an apocalyptic number.

22913890 is a deficient number, since it is larger than the sum of its proper divisors (18331130).

22913890 is a wasteful number, since it uses less digits than its factorization.

22913890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291396.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 22913890 is about 4786.8455166216. The cubic root of 22913890 is about 284.0313477928.

The spelling of 22913890 in words is "twenty-two million, nine hundred thirteen thousand, eight hundred ninety".