22557742 has 8 divisors (see below), whose sum is σ = 35827056. Its totient is φ = 10615392.

The previous prime is 22557727. The next prime is 22557751. The reversal of 22557742 is 24775522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 663463 = 22557742 / (2 + 2 + 5 + 5 + 7 + 7 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 22557698 and 22557707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331698 + ... + 331765.

It is an arithmetic number, because the mean of its divisors is an integer number (4478382).

Almost surely, 2^22557742 is an apocalyptic number.

22557742 is a deficient number, since it is larger than the sum of its proper divisors (13269314).

22557742 is a wasteful number, since it uses less digits than its factorization.

22557742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663482.

The product of its digits is 39200, while the sum is 34.

The square root of 22557742 is about 4749.4991314874. The cubic root of 22557742 is about 282.5521014927.

The spelling of 22557742 in words is "twenty-two million, five hundred fifty-seven thousand, seven hundred forty-two".