123628318 has 16 divisors (see below), whose sum is σ = 214201584. Its totient is φ = 52888960.

The previous prime is 123628313. The next prime is 123628321. The reversal of 123628318 is 813826321.

It is a happy number.

It is a super-2 number, since 2×123628318² = 30567922023018248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123628313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164905 + ... + 165652.

It is an arithmetic number, because the mean of its divisors is an integer number (13387599).

Almost surely, 2^123628318 is an apocalyptic number.

123628318 is a deficient number, since it is larger than the sum of its proper divisors (90573266).

123628318 is a wasteful number, since it uses less digits than its factorization.

123628318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330587.

The product of its digits is 13824, while the sum is 34.

The square root of 123628318 is about 11118.8271863538. The cubic root of 123628318 is about 498.1643597636.

The spelling of 123628318 in words is "one hundred twenty-three million, six hundred twenty-eight thousand, three hundred eighteen".