9863872 has 28 divisors (see below), whose sum is σ = 20427696. Its totient is φ = 4716800.

The previous prime is 9863851. The next prime is 9863923. The reversal of 9863872 is 2783689.

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, 1879 + ... + 4822.

Almost surely, 2^9863872 is an apocalyptic number.

9863872 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9863872 is an abundant number, since it is smaller than the sum of its proper divisors (10563824).

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

9863872 is a wasteful number, since it uses less digits than its factorization.

9863872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736 (or 6726 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 9863872 is about 3140.6801811073. The cubic root of 9863872 is about 214.4614029223.

The spelling of 9863872 in words is "nine million, eight hundred sixty-three thousand, eight hundred seventy-two".