22897481 has 4 divisors (see below), whose sum is σ = 22997700. Its totient is φ = 22797264.

The previous prime is 22897471. The next prime is 22897519. The reversal of 22897481 is 18479822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9096256 + 13801225 = 3016^2 + 3715^2 .

It is a cyclic number.

It is not a de Polignac number, because 22897481 - 2¹⁴ = 22881097 is a prime.

It is a super-2 number, since 2×22897481² = 1048589272290722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22897421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49766 + ... + 50223.

It is an arithmetic number, because the mean of its divisors is an integer number (5749425).

Almost surely, 2^22897481 is an apocalyptic number.

It is an amenable number.

22897481 is a deficient number, since it is larger than the sum of its proper divisors (100219).

22897481 is an equidigital number, since it uses as much as digits as its factorization.

22897481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100218.

The product of its digits is 64512, while the sum is 41.

The square root of 22897481 is about 4785.1312416693. The cubic root of 22897481 is about 283.9635318180.

The spelling of 22897481 in words is "twenty-two million, eight hundred ninety-seven thousand, four hundred eighty-one".