22129757 has 8 divisors (see below), whose sum is σ = 23872800. Its totient is φ = 20392560.

The previous prime is 22129739. The next prime is 22129759. The reversal of 22129757 is 75792122.

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

It is a cyclic number.

It is not a de Polignac number, because 22129757 - 2⁸ = 22129501 is a prime.

It is a super-2 number, since 2×22129757² = 979452289758098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22129759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9494 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (2984100).

Almost surely, 2^22129757 is an apocalyptic number.

It is an amenable number.

22129757 is a deficient number, since it is larger than the sum of its proper divisors (1743043).

22129757 is a wasteful number, since it uses less digits than its factorization.

22129757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923.

The product of its digits is 17640, while the sum is 35.

The square root of 22129757 is about 4704.2275667744. The cubic root of 22129757 is about 280.7537387298.

The spelling of 22129757 in words is "twenty-two million, one hundred twenty-nine thousand, seven hundred fifty-seven".