22742374 has 4 divisors (see below), whose sum is σ = 34113564. Its totient is φ = 11371186.

The previous prime is 22742371. The next prime is 22742381. The reversal of 22742374 is 47324722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47324722 = 2 ⋅23662361.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5685592 + ... + 5685595.

It is an arithmetic number, because the mean of its divisors is an integer number (8528391).

Almost surely, 2^22742374 is an apocalyptic number.

22742374 is a deficient number, since it is larger than the sum of its proper divisors (11371190).

22742374 is a wasteful number, since it uses less digits than its factorization.

22742374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11371189.

The product of its digits is 18816, while the sum is 31.

The square root of 22742374 is about 4768.8965180637. The cubic root of 22742374 is about 283.3208911107.

The spelling of 22742374 in words is "twenty-two million, seven hundred forty-two thousand, three hundred seventy-four".