22463918 has 4 divisors (see below), whose sum is σ = 33695880. Its totient is φ = 11231958.

The previous prime is 22463897. The next prime is 22463923. The reversal of 22463918 is 81936422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81936422 = 2 ⋅40968211.

It is a super-2 number, since 2×22463918² = 1009255223821448, 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, 5615978 + ... + 5615981.

It is an arithmetic number, because the mean of its divisors is an integer number (8423970).

Almost surely, 2^22463918 is an apocalyptic number.

22463918 is a deficient number, since it is larger than the sum of its proper divisors (11231962).

22463918 is a wasteful number, since it uses less digits than its factorization.

22463918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231961.

The product of its digits is 20736, while the sum is 35.

The square root of 22463918 is about 4739.6115874616. The cubic root of 22463918 is about 282.1598192044.

The spelling of 22463918 in words is "twenty-two million, four hundred sixty-three thousand, nine hundred eighteen".