22423487 has 4 divisors (see below), whose sum is σ = 22488456. Its totient is φ = 22358520.

The previous prime is 22423469. The next prime is 22423537. The reversal of 22423487 is 78432422.

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 22423487 - 2⁸ = 22423231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22423087) 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, 31964 + ... + 32657.

It is an arithmetic number, because the mean of its divisors is an integer number (5622114).

Almost surely, 2^22423487 is an apocalyptic number.

22423487 is a deficient number, since it is larger than the sum of its proper divisors (64969).

22423487 is an equidigital number, since it uses as much as digits as its factorization.

22423487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64968.

The product of its digits is 21504, while the sum is 32.

The square root of 22423487 is about 4735.3444436493. The cubic root of 22423487 is about 281.9904386209.

The spelling of 22423487 in words is "twenty-two million, four hundred twenty-three thousand, four hundred eighty-seven".