22730157 has 12 divisors (see below), whose sum is σ = 32876220. Its totient is φ = 15133248.

The previous prime is 22730119. The next prime is 22730159. The reversal of 22730157 is 75103722.

It can be written as a sum of positive squares in 2 ways, for example, as 9400356 + 13329801 = 3066^2 + 3651^2 .

It is not a de Polignac number, because 22730157 - 2¹¹ = 22728109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22730157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22730159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9043 + ... + 11279.

It is an arithmetic number, because the mean of its divisors is an integer number (2739685).

Almost surely, 2^22730157 is an apocalyptic number.

It is an amenable number.

22730157 is a deficient number, since it is larger than the sum of its proper divisors (10146063).

22730157 is a wasteful number, since it uses less digits than its factorization.

22730157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3369 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 22730157 is about 4767.6154417067. The cubic root of 22730157 is about 283.2701495403.

Adding to 22730157 its reverse (75103722), we get a palindrome (97833879).

The spelling of 22730157 in words is "twenty-two million, seven hundred thirty thousand, one hundred fifty-seven".