872388 has 36 divisors (see below), whose sum is σ = 2406768. Its totient is φ = 264240.

The previous prime is 872387. The next prime is 872393. The reversal of 872388 is 883278.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×872388² = 1522121645088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (872381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 706 + ... + 1497.

2⁸⁷²³⁸⁸ is an apocalyptic number.

It is an amenable number.

872388 is an abundant number, since it is smaller than the sum of its proper divisors (1534380).

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

872388 is a wasteful number, since it uses less digits than its factorization.

872388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224 (or 2219 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 872388 is about 934.0171304639. The cubic root of 872388 is about 95.5512913988.

The spelling of 872388 in words is "eight hundred seventy-two thousand, three hundred eighty-eight".