22730286 has 16 divisors (see below), whose sum is σ = 46139904. Its totient is φ = 7463544.

The previous prime is 22730261. The next prime is 22730293. The reversal of 22730286 is 68203722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27870 + ... + 28673.

It is an arithmetic number, because the mean of its divisors is an integer number (2883744).

Almost surely, 2^22730286 is an apocalyptic number.

22730286 is an abundant number, since it is smaller than the sum of its proper divisors (23409618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22730286 is a wasteful number, since it uses less digits than its factorization.

22730286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56615.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22730286 is about 4767.6289704632. The cubic root of 22730286 is about 283.2706854184.

The spelling of 22730286 in words is "twenty-two million, seven hundred thirty thousand, two hundred eighty-six".