22374487 has 2 divisors, whose sum is σ = 22374488. Its totient is φ = 22374486.

The previous prime is 22374481. The next prime is 22374509. The reversal of 22374487 is 78447322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22374487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22374481) 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 as a sum of consecutive naturals, namely, 11187243 + 11187244.

It is an arithmetic number, because the mean of its divisors is an integer number (11187244).

Almost surely, 2^22374487 is an apocalyptic number.

22374487 is a deficient number, since it is larger than the sum of its proper divisors (1).

22374487 is an equidigital number, since it uses as much as digits as its factorization.

22374487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 37.

The square root of 22374487 is about 4730.1677560104. The cubic root of 22374487 is about 281.7848861651.

It can be divided in two parts, 2237 and 4487, that added together give a square (6724 = 82²).

The spelling of 22374487 in words is "twenty-two million, three hundred seventy-four thousand, four hundred eighty-seven".