7868172 has 48 divisors (see below), whose sum is σ = 20421632. Its totient is φ = 2341440.

The previous prime is 7868153. The next prime is 7868191. The reversal of 7868172 is 2718687.

It is an interprime number because it is at equal distance from previous prime (7868153) and next prime (7868191).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 7868172.

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, 4023 + ... + 5649.

Almost surely, 2^7868172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7868172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10210816).

7868172 is an abundant number, since it is smaller than the sum of its proper divisors (12553460).

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

7868172 is a wasteful number, since it uses less digits than its factorization.

7868172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 1676 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 7868172 is about 2805.0262030862. The cubic root of 7868172 is about 198.8953432336.

The spelling of 7868172 in words is "seven million, eight hundred sixty-eight thousand, one hundred seventy-two".