18828077 has 8 divisors (see below), whose sum is σ = 19227192. Its totient is φ = 18432000.

The previous prime is 18828049. The next prime is 18828097. The reversal of 18828077 is 77082881.

It can be written as a sum of positive squares in 4 ways, for example, as 44521 + 18783556 = 211^2 + 4334^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18828077 - 2⁶ = 18828013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18828037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15077 + ... + 16277.

It is an arithmetic number, because the mean of its divisors is an integer number (2403399).

Almost surely, 2^18828077 is an apocalyptic number.

It is an amenable number.

18828077 is a deficient number, since it is larger than the sum of its proper divisors (399115).

18828077 is a wasteful number, since it uses less digits than its factorization.

18828077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519.

The product of its (nonzero) digits is 50176, while the sum is 41.

The square root of 18828077 is about 4339.1332083724. The cubic root of 18828077 is about 266.0328836050.

The spelling of 18828077 in words is "eighteen million, eight hundred twenty-eight thousand, seventy-seven".