22897782 has 32 divisors (see below), whose sum is σ = 51753600. Its totient is φ = 7502184.

The previous prime is 22897757. The next prime is 22897799. The reversal of 22897782 is 28779822.

It is a happy number.

It is a congruent number.

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, 408 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (1617300).

Almost surely, 2^22897782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22897782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25876800).

22897782 is an abundant number, since it is smaller than the sum of its proper divisors (28855818).

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

22897782 is a wasteful number, since it uses less digits than its factorization.

22897782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7257 (or 7251 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 22897782 is about 4785.1626931589. The cubic root of 22897782 is about 283.9647760983.

The spelling of 22897782 in words is "twenty-two million, eight hundred ninety-seven thousand, seven hundred eighty-two".