22749170 has 8 divisors (see below), whose sum is σ = 40948524. Its totient is φ = 9099664.

The previous prime is 22749169. The next prime is 22749173. The reversal of 22749170 is 7194722.

It can be written as a sum of positive squares in 2 ways, for example, as 22686169 + 63001 = 4763^2 + 251^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22749173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137449 + ... + 1137468.

Almost surely, 2^22749170 is an apocalyptic number.

22749170 is a deficient number, since it is larger than the sum of its proper divisors (18199354).

22749170 is a wasteful number, since it uses less digits than its factorization.

22749170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274924.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 22749170 is about 4769.6089986497. The cubic root of 22749170 is about 283.3491094637.

The spelling of 22749170 in words is "twenty-two million, seven hundred forty-nine thousand, one hundred seventy".