22002742 has 4 divisors (see below), whose sum is σ = 33004116. Its totient is φ = 11001370.

The previous prime is 22002737. The next prime is 22002763. The reversal of 22002742 is 24720022.

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, 5500684 + ... + 5500687.

It is an arithmetic number, because the mean of its divisors is an integer number (8251029).

Almost surely, 2^22002742 is an apocalyptic number.

22002742 is a deficient number, since it is larger than the sum of its proper divisors (11001374).

22002742 is a wasteful number, since it uses less digits than its factorization.

22002742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001373.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 22002742 is about 4690.7080488984. The cubic root of 22002742 is about 280.2155737817.

Adding to 22002742 its reverse (24720022), we get a palindrome (46722764).

The spelling of 22002742 in words is "twenty-two million, two thousand, seven hundred forty-two".