22749274 has 4 divisors (see below), whose sum is σ = 34123914. Its totient is φ = 11374636.

The previous prime is 22749271. The next prime is 22749283. The reversal of 22749274 is 47294722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47294722 = 2 ⋅23647361.

It can be written as a sum of positive squares in only one way, i.e., 14768649 + 7980625 = 3843^2 + 2825^2 .

It is not an unprimeable number, because it can be changed into a prime (22749271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687317 + ... + 5687320.

Almost surely, 2^22749274 is an apocalyptic number.

22749274 is a deficient number, since it is larger than the sum of its proper divisors (11374640).

22749274 is a wasteful number, since it uses less digits than its factorization.

22749274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374639.

The product of its digits is 56448, while the sum is 37.

The square root of 22749274 is about 4769.6199009984. The cubic root of 22749274 is about 283.3495412489.

The spelling of 22749274 in words is "twenty-two million, seven hundred forty-nine thousand, two hundred seventy-four".