22453642 has 4 divisors (see below), whose sum is σ = 33680466. Its totient is φ = 11226820.

The previous prime is 22453631. The next prime is 22453663. The reversal of 22453642 is 24635422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15531481 + 6922161 = 3941^2 + 2631^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22453642.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5613409 + ... + 5613412.

Almost surely, 2^22453642 is an apocalyptic number.

22453642 is a deficient number, since it is larger than the sum of its proper divisors (11226824).

22453642 is a wasteful number, since it uses less digits than its factorization.

22453642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11226823.

The product of its digits is 11520, while the sum is 28.

The square root of 22453642 is about 4738.5274083833. The cubic root of 22453642 is about 282.1167884720.

The spelling of 22453642 in words is "twenty-two million, four hundred fifty-three thousand, six hundred forty-two".