22008542 has 4 divisors (see below), whose sum is σ = 33012816. Its totient is φ = 11004270.

The previous prime is 22008533. The next prime is 22008559. The reversal of 22008542 is 24580022.

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

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, 5502134 + ... + 5502137.

It is an arithmetic number, because the mean of its divisors is an integer number (8253204).

Almost surely, 2^22008542 is an apocalyptic number.

22008542 is a deficient number, since it is larger than the sum of its proper divisors (11004274).

22008542 is a wasteful number, since it uses less digits than its factorization.

22008542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11004273.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 22008542 is about 4691.3262517118. The cubic root of 22008542 is about 280.2401935547.

Adding to 22008542 its reverse (24580022), we get a palindrome (46588564).

The spelling of 22008542 in words is "twenty-two million, eight thousand, five hundred forty-two".