123897856 has 24 divisors (see below), whose sum is σ = 247739310. Its totient is φ = 61947904.

The previous prime is 123897847. The next prime is 123897857. The reversal of 123897856 is 658798321.

It can be written as a sum of positive squares in only one way, i.e., 77440000 + 46457856 = 8800^2 + 6816^2 .

It is not an unprimeable number, because it can be changed into a prime (123897857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28201 + ... + 32296.

Almost surely, 2^123897856 is an apocalyptic number.

123897856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123897856 is a deficient number, since it is larger than the sum of its proper divisors (123841454).

123897856 is an frugal number, since it uses more digits than its factorization.

123897856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60519 (or 60499 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 123897856 is about 11130.9413797756. The cubic root of 123897856 is about 498.5261343758.

The spelling of 123897856 in words is "one hundred twenty-three million, eight hundred ninety-seven thousand, eight hundred fifty-six".