22724737 has 8 divisors (see below), whose sum is σ = 26001536. Its totient is φ = 19455552.

The previous prime is 22724729. The next prime is 22724747. The reversal of 22724737 is 73742722.

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 22724737 - 2³ = 22724729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22724707) 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, 7828 + ... + 10330.

It is an arithmetic number, because the mean of its divisors is an integer number (3250192).

Almost surely, 2^22724737 is an apocalyptic number.

It is an amenable number.

22724737 is a deficient number, since it is larger than the sum of its proper divisors (3276799).

22724737 is a wasteful number, since it uses less digits than its factorization.

22724737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807.

The product of its digits is 32928, while the sum is 34.

The square root of 22724737 is about 4767.0469894894. The cubic root of 22724737 is about 283.2476325195.

It can be divided in two parts, 227 and 24737, that added together give a square (24964 = 158²).

The spelling of 22724737 in words is "twenty-two million, seven hundred twenty-four thousand, seven hundred thirty-seven".