22738157 has 4 divisors (see below), whose sum is σ = 24487260. Its totient is φ = 20989056.

The previous prime is 22738151. The next prime is 22738169. The reversal of 22738157 is 75183722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2208196 + 20529961 = 1486^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 22738157 - 2¹⁶ = 22672621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22738151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874532 + ... + 874557.

It is an arithmetic number, because the mean of its divisors is an integer number (6121815).

Almost surely, 2^22738157 is an apocalyptic number.

It is an amenable number.

22738157 is a deficient number, since it is larger than the sum of its proper divisors (1749103).

22738157 is a wasteful number, since it uses less digits than its factorization.

22738157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749102.

The product of its digits is 23520, while the sum is 35.

The square root of 22738157 is about 4768.4543617403. The cubic root of 22738157 is about 283.3033784556.

The spelling of 22738157 in words is "twenty-two million, seven hundred thirty-eight thousand, one hundred fifty-seven".