22491410 has 8 divisors (see below), whose sum is σ = 40484556. Its totient is φ = 8996560.

The previous prime is 22491409. The next prime is 22491419. The reversal of 22491410 is 1419422.

It can be written as a sum of positive squares in 2 ways, for example, as 21836929 + 654481 = 4673^2 + 809^2 .

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 (22491419) 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 3 ways as a sum of consecutive naturals, for example, 1124561 + ... + 1124580.

Almost surely, 2^22491410 is an apocalyptic number.

22491410 is a deficient number, since it is larger than the sum of its proper divisors (17993146).

22491410 is a wasteful number, since it uses less digits than its factorization.

22491410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249148.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22491410 is about 4742.5109383111. The cubic root of 22491410 is about 282.2748774269.

The spelling of 22491410 in words is "twenty-two million, four hundred ninety-one thousand, four hundred ten".