7872018 has 48 divisors (see below), whose sum is σ = 19790400. Its totient is φ = 2043360.

The previous prime is 7872017. The next prime is 7872103. The reversal of 7872018 is 8102787.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 7872018.

It is not an unprimeable number, because it can be changed into a prime (7872013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4308 + ... + 5856.

It is an arithmetic number, because the mean of its divisors is an integer number (412300).

Almost surely, 2^7872018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7872018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9895200).

7872018 is an abundant number, since it is smaller than the sum of its proper divisors (11918382).

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

7872018 is a wasteful number, since it uses less digits than its factorization.

7872018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 7872018 is about 2805.7116744242. The cubic root of 7872018 is about 198.9277449523.

The spelling of 7872018 in words is "seven million, eight hundred seventy-two thousand, eighteen".