18945528 has 32 divisors (see below), whose sum is σ = 54130560. Its totient is φ = 5412960.

The previous prime is 18945503. The next prime is 18945529. The reversal of 18945528 is 82554981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 18945528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18945529) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56218 + ... + 56553.

It is an arithmetic number, because the mean of its divisors is an integer number (1691580).

Almost surely, 2^18945528 is an apocalyptic number.

It is an amenable number.

18945528 is an abundant number, since it is smaller than the sum of its proper divisors (35185032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18945528 is a wasteful number, since it uses less digits than its factorization.

18945528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112787 (or 112783 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 18945528 is about 4352.6460917470. The cubic root of 18945528 is about 266.5849152180.

The spelling of 18945528 in words is "eighteen million, nine hundred forty-five thousand, five hundred twenty-eight".