22731722 has 16 divisors (see below), whose sum is σ = 37068192. Its totient is φ = 10392240.

The previous prime is 22731721. The next prime is 22731743. The reversal of 22731722 is 22713722.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 22731691 and 22731700.

It is not an unprimeable number, because it can be changed into a prime (22731721) 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, 1304 + ... + 6867.

It is an arithmetic number, because the mean of its divisors is an integer number (2316762).

Almost surely, 2^22731722 is an apocalyptic number.

22731722 is a deficient number, since it is larger than the sum of its proper divisors (14336470).

22731722 is a wasteful number, since it uses less digits than its factorization.

22731722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8293.

The product of its digits is 2352, while the sum is 26.

The square root of 22731722 is about 4767.7795670522. The cubic root of 22731722 is about 283.2766505602.

The spelling of 22731722 in words is "twenty-two million, seven hundred thirty-one thousand, seven hundred twenty-two".