7081312 has 48 divisors (see below), whose sum is σ = 16142112. Its totient is φ = 2995200.

The previous prime is 7081279. The next prime is 7081337. The reversal of 7081312 is 2131807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22468 + ... + 22780.

It is an arithmetic number, because the mean of its divisors is an integer number (336294).

Almost surely, 2^7081312 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 7081312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8071056).

7081312 is an abundant number, since it is smaller than the sum of its proper divisors (9060800).

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

7081312 is a wasteful number, since it uses less digits than its factorization.

7081312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 7081312 is about 2661.0734676066. The cubic root of 7081312 is about 192.0309556570.

The spelling of 7081312 in words is "seven million, eighty-one thousand, three hundred twelve".