123828190 has 16 divisors (see below), whose sum is σ = 223057440. Its totient is φ = 49494240.

The previous prime is 123828181. The next prime is 123828203. The reversal of 123828190 is 91828321.

It is a super-2 number, since 2×123828190² = 30666841277352200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12391 + ... + 20029.

It is an arithmetic number, because the mean of its divisors is an integer number (13941090).

Almost surely, 2^123828190 is an apocalyptic number.

123828190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123828190 is a deficient number, since it is larger than the sum of its proper divisors (99229250).

123828190 is a wasteful number, since it uses less digits than its factorization.

123828190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9267.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 123828190 is about 11127.8115548386. The cubic root of 123828190 is about 498.4326788087.

The spelling of 123828190 in words is "one hundred twenty-three million, eight hundred twenty-eight thousand, one hundred ninety".