18828770 has 8 divisors (see below), whose sum is σ = 33891804. Its totient is φ = 7531504.

The previous prime is 18828763. The next prime is 18828773. The reversal of 18828770 is 7782881.

It can be written as a sum of positive squares in 2 ways, for example, as 18826921 + 1849 = 4339^2 + 43^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18828773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941429 + ... + 941448.

Almost surely, 2^18828770 is an apocalyptic number.

18828770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18828770 is a deficient number, since it is larger than the sum of its proper divisors (15063034).

18828770 is a wasteful number, since it uses less digits than its factorization.

18828770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882884.

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

The square root of 18828770 is about 4339.2130622960. The cubic root of 18828770 is about 266.0361474987.

The spelling of 18828770 in words is "eighteen million, eight hundred twenty-eight thousand, seven hundred seventy".