22287345 has 16 divisors (see below), whose sum is σ = 37210752. Its totient is φ = 11369600.

The previous prime is 22287337. The next prime is 22287359. The reversal of 22287345 is 54378222.

It is not a de Polignac number, because 22287345 - 2³ = 22287337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31956 + ... + 32645.

It is an arithmetic number, because the mean of its divisors is an integer number (2325672).

Almost surely, 2^22287345 is an apocalyptic number.

It is an amenable number.

22287345 is a deficient number, since it is larger than the sum of its proper divisors (14923407).

22287345 is a wasteful number, since it uses less digits than its factorization.

22287345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64632.

The product of its digits is 26880, while the sum is 33.

The square root of 22287345 is about 4720.9474684644. The cubic root of 22287345 is about 281.4185873200.

The spelling of 22287345 in words is "twenty-two million, two hundred eighty-seven thousand, three hundred forty-five".