123628272 has 20 divisors (see below), whose sum is σ = 319373160. Its totient is φ = 41209408.

The previous prime is 123628259. The next prime is 123628313. The reversal of 123628272 is 272826321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287747 + ... + 1287842.

It is an arithmetic number, because the mean of its divisors is an integer number (15968658).

Almost surely, 2^123628272 is an apocalyptic number.

123628272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123628272 is an abundant number, since it is smaller than the sum of its proper divisors (195744888).

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

123628272 is a wasteful number, since it uses less digits than its factorization.

123628272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575600 (or 2575594 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 123628272 is about 11118.8251177901. The cubic root of 123628272 is about 498.1642979774.

The spelling of 123628272 in words is "one hundred twenty-three million, six hundred twenty-eight thousand, two hundred seventy-two".