22770157 has 8 divisors (see below), whose sum is σ = 24219000. Its totient is φ = 21333504.

The previous prime is 22770131. The next prime is 22770169. The reversal of 22770157 is 75107722.

It can be written as a sum of positive squares in 4 ways, for example, as 9853321 + 12916836 = 3139^2 + 3594^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22770157 - 2¹⁵ = 22737389 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 (22770757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969 + ... + 6817.

It is an arithmetic number, because the mean of its divisors is an integer number (3027375).

Almost surely, 2^22770157 is an apocalyptic number.

It is an amenable number.

22770157 is a deficient number, since it is larger than the sum of its proper divisors (1448843).

22770157 is a wasteful number, since it uses less digits than its factorization.

22770157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 22770157 is about 4771.8085669901. The cubic root of 22770157 is about 283.4362162318.

Adding to 22770157 its reverse (75107722), we get a palindrome (97877879).

The spelling of 22770157 in words is "twenty-two million, seven hundred seventy thousand, one hundred fifty-seven".