123671856 has 80 divisors (see below), whose sum is σ = 398331648. Its totient is φ = 32121600.

The previous prime is 123671837. The next prime is 123671881. The reversal of 123671856 is 658176321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13035 + ... + 20426.

Almost surely, 2^123671856 is an apocalyptic number.

123671856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123671856 is an abundant number, since it is smaller than the sum of its proper divisors (274659792).

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

123671856 is a wasteful number, since it uses less digits than its factorization.

123671856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33490 (or 33484 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 123671856 is about 11120.7848643879. The cubic root of 123671856 is about 498.2228321661. Note that the first 3 decimals are identical.

The spelling of 123671856 in words is "one hundred twenty-three million, six hundred seventy-one thousand, eight hundred fifty-six".