22789657 has 8 divisors (see below), whose sum is σ = 24897600. Its totient is φ = 20687760.

The previous prime is 22789643. The next prime is 22789687. The reversal of 22789657 is 75698722.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22789657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22789687) 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, 10719 + ... + 12667.

It is an arithmetic number, because the mean of its divisors is an integer number (3112200).

Almost surely, 2^22789657 is an apocalyptic number.

22789657 is the 3898-th pentagonal number.

It is an amenable number.

22789657 is a deficient number, since it is larger than the sum of its proper divisors (2107943).

22789657 is a wasteful number, since it uses less digits than its factorization.

22789657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023.

The product of its digits is 423360, while the sum is 46.

The square root of 22789657 is about 4773.8513801751. The cubic root of 22789657 is about 283.5171032340.

It can be divided in two parts, 2278 and 9657, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 22789657 in words is "twenty-two million, seven hundred eighty-nine thousand, six hundred fifty-seven".