22745493 has 6 divisors (see below), whose sum is σ = 32854614. Its totient is φ = 15163656.

The previous prime is 22745479. The next prime is 22745519. The reversal of 22745493 is 39454722.

It can be written as a sum of positive squares in only one way, i.e., 22638564 + 106929 = 4758^2 + 327^2 .

It is not a de Polignac number, because 22745493 - 2⁴ = 22745477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22745453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263630 + ... + 1263647.

It is an arithmetic number, because the mean of its divisors is an integer number (5475769).

Almost surely, 2^22745493 is an apocalyptic number.

It is an amenable number.

22745493 is a deficient number, since it is larger than the sum of its proper divisors (10109121).

22745493 is a wasteful number, since it uses less digits than its factorization.

22745493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527283 (or 2527280 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 22745493 is about 4769.2235217067. The cubic root of 22745493 is about 283.3338425212. Note that the first 3 decimals are identical.

The spelling of 22745493 in words is "twenty-two million, seven hundred forty-five thousand, four hundred ninety-three".