22426487 has 4 divisors (see below), whose sum is σ = 22678560. Its totient is φ = 22174416.

The previous prime is 22426471. The next prime is 22426493. The reversal of 22426487 is 78462422.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22426487 - 2⁴ = 22426471 is a prime.

It is a super-2 number, since 2×22426487² = 1005894638322338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22426457) 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, 125903 + ... + 126080.

It is an arithmetic number, because the mean of its divisors is an integer number (5669640).

Almost surely, 2^22426487 is an apocalyptic number.

22426487 is a deficient number, since it is larger than the sum of its proper divisors (252073).

22426487 is an equidigital number, since it uses as much as digits as its factorization.

22426487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252072.

The product of its digits is 43008, while the sum is 35.

The square root of 22426487 is about 4735.6611998748. The cubic root of 22426487 is about 282.0030137330.

The spelling of 22426487 in words is "twenty-two million, four hundred twenty-six thousand, four hundred eighty-seven".