22701729 has 12 divisors (see below), whose sum is σ = 30562224. Its totient is φ = 14989104.

The previous prime is 22701727. The next prime is 22701739. The reversal of 22701729 is 92710722.

It is a happy number.

It is not a de Polignac number, because 22701729 - 2¹ = 22701727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22701696 and 22701705.

It is not an unprimeable number, because it can be changed into a prime (22701727) 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, 73794 + ... + 74100.

It is an arithmetic number, because the mean of its divisors is an integer number (2546852).

Almost surely, 2^22701729 is an apocalyptic number.

It is an amenable number.

22701729 is a deficient number, since it is larger than the sum of its proper divisors (7860495).

22701729 is an equidigital number, since it uses as much as digits as its factorization.

22701729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 22701729 is about 4764.6331443250. The cubic root of 22701729 is about 283.1520074720.

The spelling of 22701729 in words is "twenty-two million, seven hundred one thousand, seven hundred twenty-nine".