22782427 has 12 divisors (see below), whose sum is σ = 23847888. Its totient is φ = 21762000.

The previous prime is 22782413. The next prime is 22782449. The reversal of 22782427 is 72428722.

It is a de Polignac number, because none of the positive numbers 2^k-22782427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22782392 and 22782401.

It is not an unprimeable number, because it can be changed into a prime (22782407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145033 + ... + 145189.

It is an arithmetic number, because the mean of its divisors is an integer number (1987324).

Almost surely, 2^22782427 is an apocalyptic number.

22782427 is a deficient number, since it is larger than the sum of its proper divisors (1065461).

22782427 is a wasteful number, since it uses less digits than its factorization.

22782427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 339 counting only the distinct ones).

The product of its digits is 25088, while the sum is 34.

The square root of 22782427 is about 4773.0940698880. The cubic root of 22782427 is about 283.4871182067.

The spelling of 22782427 in words is "twenty-two million, seven hundred eighty-two thousand, four hundred twenty-seven".