22419988 has 6 divisors (see below), whose sum is σ = 39234986. Its totient is φ = 11209992.

The previous prime is 22419983. The next prime is 22420003. The reversal of 22419988 is 88991422.

It can be written as a sum of positive squares in only one way, i.e., 16793604 + 5626384 = 4098^2 + 2372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22419983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802495 + ... + 2802502.

Almost surely, 2^22419988 is an apocalyptic number.

It is an amenable number.

22419988 is a deficient number, since it is larger than the sum of its proper divisors (16814998).

22419988 is a wasteful number, since it uses less digits than its factorization.

22419988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605001 (or 5604999 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 22419988 is about 4734.9749735347. The cubic root of 22419988 is about 281.9757704314.

The spelling of 22419988 in words is "twenty-two million, four hundred nineteen thousand, nine hundred eighty-eight".