22731246 has 64 divisors (see below), whose sum is σ = 53698560. Its totient is φ = 7115040.

The previous prime is 22731229. The next prime is 22731253. The reversal of 22731246 is 64213722.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61755 + ... + 62121.

It is an arithmetic number, because the mean of its divisors is an integer number (839040).

Almost surely, 2^22731246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22731246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26849280).

22731246 is an abundant number, since it is smaller than the sum of its proper divisors (30967314).

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

22731246 is a wasteful number, since it uses less digits than its factorization.

22731246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 440 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 22731246 is about 4767.7296483756. The cubic root of 22731246 is about 283.2746732848.

Adding to 22731246 its reverse (64213722), we get a palindrome (86944968).

The spelling of 22731246 in words is "twenty-two million, seven hundred thirty-one thousand, two hundred forty-six".