20077180 has 24 divisors (see below), whose sum is σ = 42256368. Its totient is φ = 8012928.

The previous prime is 20077171. The next prime is 20077217. The reversal of 20077180 is 8177002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11527 + ... + 13153.

It is an arithmetic number, because the mean of its divisors is an integer number (1760682).

Almost surely, 2^20077180 is an apocalyptic number.

20077180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20077180 is an abundant number, since it is smaller than the sum of its proper divisors (22179188).

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

20077180 is a wasteful number, since it uses less digits than its factorization.

20077180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253 (or 2251 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 20077180 is about 4480.7566325343. The cubic root of 20077180 is about 271.7904780640.

The spelling of 20077180 in words is "twenty million, seventy-seven thousand, one hundred eighty".