22472887 has 2 divisors, whose sum is σ = 22472888. Its totient is φ = 22472886.

The previous prime is 22472881. The next prime is 22472897. The reversal of 22472887 is 78827422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22472887 is a prime.

It is a super-2 number, since 2×22472887² = 1010061300229538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22472881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11236443 + 11236444.

It is an arithmetic number, because the mean of its divisors is an integer number (11236444).

Almost surely, 2^22472887 is an apocalyptic number.

22472887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22472887 is an equidigital number, since it uses as much as digits as its factorization.

22472887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 40.

The square root of 22472887 is about 4740.5576676168. The cubic root of 22472887 is about 282.1973661525.

The spelling of 22472887 in words is "twenty-two million, four hundred seventy-two thousand, eight hundred eighty-seven".