22619998 has 4 divisors (see below), whose sum is σ = 33930000. Its totient is φ = 11309998.

The previous prime is 22619981. The next prime is 22620011. The reversal of 22619998 is 89991622.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5654998 + ... + 5655001.

It is an arithmetic number, because the mean of its divisors is an integer number (8482500).

Almost surely, 2^22619998 is an apocalyptic number.

22619998 is a deficient number, since it is larger than the sum of its proper divisors (11310002).

22619998 is a wasteful number, since it uses less digits than its factorization.

22619998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11310001.

The product of its digits is 139968, while the sum is 46.

The square root of 22619998 is about 4756.0485699791. The cubic root of 22619998 is about 282.8117966040.

The spelling of 22619998 in words is "twenty-two million, six hundred nineteen thousand, nine hundred ninety-eight".