22247542 has 4 divisors (see below), whose sum is σ = 33371316. Its totient is φ = 11123770.

The previous prime is 22247521. The next prime is 22247557. The reversal of 22247542 is 24574222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22247542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561884 + ... + 5561887.

It is an arithmetic number, because the mean of its divisors is an integer number (8342829).

Almost surely, 2^22247542 is an apocalyptic number.

22247542 is a deficient number, since it is larger than the sum of its proper divisors (11123774).

22247542 is a wasteful number, since it uses less digits than its factorization.

22247542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123773.

The product of its digits is 8960, while the sum is 28.

The square root of 22247542 is about 4716.7300113532. The cubic root of 22247542 is about 281.2509588774.

The spelling of 22247542 in words is "twenty-two million, two hundred forty-seven thousand, five hundred forty-two".