22378722 has 16 divisors (see below), whose sum is σ = 45081120. Its totient is φ = 7405632.

The previous prime is 22378717. The next prime is 22378723. The reversal of 22378722 is 22787322.

It is not an unprimeable number, because it can be changed into a prime (22378723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12583 + ... + 14250.

It is an arithmetic number, because the mean of its divisors is an integer number (2817570).

Almost surely, 2^22378722 is an apocalyptic number.

22378722 is an abundant number, since it is smaller than the sum of its proper divisors (22702398).

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

22378722 is a wasteful number, since it uses less digits than its factorization.

22378722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26977.

The product of its digits is 18816, while the sum is 33.

The square root of 22378722 is about 4730.6153933711. The cubic root of 22378722 is about 281.8026636112.

It can be divided in two parts, 2237872 and 2, that multiplied together give a palindrome (4475744).

The spelling of 22378722 in words is "twenty-two million, three hundred seventy-eight thousand, seven hundred twenty-two".