22400998 has 4 divisors (see below), whose sum is σ = 33601500. Its totient is φ = 11200498.

The previous prime is 22400971. The next prime is 22401017. The reversal of 22400998 is 89900422.

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

It is a super-2 number, since 2×22400998² = 1003609422792008, which contains 22 as substring.

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, 5600248 + ... + 5600251.

It is an arithmetic number, because the mean of its divisors is an integer number (8400375).

Almost surely, 2^22400998 is an apocalyptic number.

22400998 is a deficient number, since it is larger than the sum of its proper divisors (11200502).

22400998 is a wasteful number, since it uses less digits than its factorization.

22400998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200501.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 22400998 is about 4732.9692582986. The cubic root of 22400998 is about 281.8961356515.

The spelling of 22400998 in words is "twenty-two million, four hundred thousand, nine hundred ninety-eight".