22712649 has 8 divisors (see below), whose sum is σ = 30515232. Its totient is φ = 15025920.

The previous prime is 22712639. The next prime is 22712671. The reversal of 22712649 is 94621722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22712649 - 2⁵ = 22712617 is a prime.

It is a super-4 number, since 4×22712649⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (22712639) 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 in 7 ways as a sum of consecutive naturals, for example, 28504 + ... + 29289.

It is an arithmetic number, because the mean of its divisors is an integer number (3814404).

Almost surely, 2^22712649 is an apocalyptic number.

It is an amenable number.

22712649 is a deficient number, since it is larger than the sum of its proper divisors (7802583).

22712649 is a wasteful number, since it uses less digits than its factorization.

22712649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57927.

The product of its digits is 12096, while the sum is 33.

The square root of 22712649 is about 4765.7789499724. The cubic root of 22712649 is about 283.1974008467.

The spelling of 22712649 in words is "twenty-two million, seven hundred twelve thousand, six hundred forty-nine".