18200772 has 36 divisors (see below), whose sum is σ = 46265856. Its totient is φ = 6032880.

The previous prime is 18200771. The next prime is 18200773. The reversal of 18200772 is 27700281.

It is an interprime number because it is at equal distance from previous prime (18200771) and next prime (18200773).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (18200771) 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 11 ways as a sum of consecutive naturals, for example, 5553 + ... + 8199.

Almost surely, 2^18200772 is an apocalyptic number.

18200772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18200772 is an abundant number, since it is smaller than the sum of its proper divisors (28065084).

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

18200772 is a wasteful number, since it uses less digits than its factorization.

18200772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 2843 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 18200772 is about 4266.2362803764. The cubic root of 18200772 is about 263.0449305667.

The spelling of 18200772 in words is "eighteen million, two hundred thousand, seven hundred seventy-two".