18224542 has 16 divisors (see below), whose sum is σ = 31306752. Its totient is φ = 7794360.

The previous prime is 18224539. The next prime is 18224551. The reversal of 18224542 is 24542281.

It is a super-2 number, since 2×18224542² = 664267862219528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18224542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7803 + ... + 9865.

It is an arithmetic number, because the mean of its divisors is an integer number (1956672).

Almost surely, 2^18224542 is an apocalyptic number.

18224542 is a deficient number, since it is larger than the sum of its proper divisors (13082210).

18224542 is a wasteful number, since it uses less digits than its factorization.

18224542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703.

The product of its digits is 5120, while the sum is 28.

The square root of 18224542 is about 4269.0211992915. The cubic root of 18224542 is about 263.1593919760.

It can be divided in two parts, 182 and 24542, that multiplied together give a palindrome (4466644).

The spelling of 18224542 in words is "eighteen million, two hundred twenty-four thousand, five hundred forty-two".