22307642 has 12 divisors (see below), whose sum is σ = 38924730. Its totient is φ = 9560376.

The previous prime is 22307627. The next prime is 22307651. The reversal of 22307642 is 24670322.

It can be written as a sum of positive squares in only one way, i.e., 11621281 + 10686361 = 3409^2 + 3269^2 .

It is a super-3 number, since 3×22307642³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113717 + ... + 113912.

Almost surely, 2^22307642 is an apocalyptic number.

22307642 is a deficient number, since it is larger than the sum of its proper divisors (16617088).

22307642 is a wasteful number, since it uses less digits than its factorization.

22307642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227645 (or 227638 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 22307642 is about 4723.0966536797. The cubic root of 22307642 is about 281.5039903442.

Adding to 22307642 its reverse (24670322), we get a palindrome (46977964).

The spelling of 22307642 in words is "twenty-two million, three hundred seven thousand, six hundred forty-two".