7156812 has 36 divisors (see below), whose sum is σ = 18087720. Its totient is φ = 2201472.

The previous prime is 7156811. The next prime is 7156817. The reversal of 7156812 is 2186517.

It is a self number, because there is not a number n which added to its sum of digits gives 7156812.

It is not an unprimeable number, because it can be changed into a prime (7156811) 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, 264 + ... + 3792.

Almost surely, 2^7156812 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 7156812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9043860).

7156812 is an abundant number, since it is smaller than the sum of its proper divisors (10930908).

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

7156812 is a wasteful number, since it uses less digits than its factorization.

7156812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562 (or 3547 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 7156812 is about 2675.2218599585. The cubic root of 7156812 is about 192.7110138986.

The spelling of 7156812 in words is "seven million, one hundred fifty-six thousand, eight hundred twelve".