7872156 has 72 divisors (see below), whose sum is σ = 22211280. Its totient is φ = 2336256.

The previous prime is 7872149. The next prime is 7872181. The reversal of 7872156 is 6512787.

7872156 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7872156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11290 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (308490).

Almost surely, 2^7872156 is an apocalyptic number.

7872156 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7872156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11105640).

7872156 is an abundant number, since it is smaller than the sum of its proper divisors (14339124).

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

7872156 is a wasteful number, since it uses less digits than its factorization.

7872156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 718 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 7872156 is about 2805.7362670073. The cubic root of 7872156 is about 198.9289073763.

The spelling of 7872156 in words is "seven million, eight hundred seventy-two thousand, one hundred fifty-six".