22897722 has 8 divisors (see below), whose sum is σ = 45795456. Its totient is φ = 7632572.

The previous prime is 22897711. The next prime is 22897727. The reversal of 22897722 is 22779822.

It is a sphenic number, since it is the product of 3 distinct primes.

22897722 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22897727) 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 3 ways as a sum of consecutive naturals, for example, 1908138 + ... + 1908149.

It is an arithmetic number, because the mean of its divisors is an integer number (5724432).

Almost surely, 2^22897722 is an apocalyptic number.

22897722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22897722 is a wasteful number, since it uses less digits than its factorization.

22897722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816292.

The product of its digits is 56448, while the sum is 39.

The square root of 22897722 is about 4785.1564237755. The cubic root of 22897722 is about 283.9645280699.

It can be divided in two parts, 2289 and 7722, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 22897722 in words is "twenty-two million, eight hundred ninety-seven thousand, seven hundred twenty-two".