22720174 has 4 divisors (see below), whose sum is σ = 34080264. Its totient is φ = 11360086.

The previous prime is 22720127. The next prime is 22720189. The reversal of 22720174 is 47102722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47102722 = 2 ⋅23551361.

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, 5680042 + ... + 5680045.

It is an arithmetic number, because the mean of its divisors is an integer number (8520066).

Almost surely, 2^22720174 is an apocalyptic number.

22720174 is a deficient number, since it is larger than the sum of its proper divisors (11360090).

22720174 is a wasteful number, since it uses less digits than its factorization.

22720174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360089.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 22720174 is about 4766.5683672848. The cubic root of 22720174 is about 283.2286730707.

Adding to 22720174 its reverse (47102722), we get a palindrome (69822896).

The spelling of 22720174 in words is "twenty-two million, seven hundred twenty thousand, one hundred seventy-four".