22744737 has 6 divisors (see below), whose sum is σ = 32853522. Its totient is φ = 15163152.

The previous prime is 22744717. The next prime is 22744741. The reversal of 22744737 is 73744722.

It can be written as a sum of positive squares in only one way, i.e., 16941456 + 5803281 = 4116^2 + 2409^2 .

It is not a de Polignac number, because 22744737 - 2⁷ = 22744609 is a prime.

It is a super-2 number, since 2×22744737² = 1034646122398338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22744717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263588 + ... + 1263605.

It is an arithmetic number, because the mean of its divisors is an integer number (5475587).

Almost surely, 2^22744737 is an apocalyptic number.

It is an amenable number.

22744737 is a deficient number, since it is larger than the sum of its proper divisors (10108785).

22744737 is a wasteful number, since it uses less digits than its factorization.

22744737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527199 (or 2527196 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 22744737 is about 4769.1442628631. The cubic root of 22744737 is about 283.3307033973.

The spelling of 22744737 in words is "twenty-two million, seven hundred forty-four thousand, seven hundred thirty-seven".