18779072 has 28 divisors (see below), whose sum is σ = 40133016. Its totient is φ = 8666880.

The previous prime is 18779041. The next prime is 18779077. The reversal of 18779072 is 27097781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18779077) 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 3 ways as a sum of consecutive naturals, for example, 10454 + ... + 12117.

It is an arithmetic number, because the mean of its divisors is an integer number (1433322).

Almost surely, 2^18779072 is an apocalyptic number.

It is an amenable number.

18779072 is an abundant number, since it is smaller than the sum of its proper divisors (21353944).

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

18779072 is a wasteful number, since it uses less digits than its factorization.

18779072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22596 (or 22586 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 18779072 is about 4333.4826640936. The cubic root of 18779072 is about 265.8018763256.

The spelling of 18779072 in words is "eighteen million, seven hundred seventy-nine thousand, seventy-two".