7251816 has 64 divisors (see below), whose sum is σ = 21309120. Its totient is φ = 2027520.

The previous prime is 7251791. The next prime is 7251823. The reversal of 7251816 is 6181527.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2376 + ... + 4488.

It is an arithmetic number, because the mean of its divisors is an integer number (332955).

Almost surely, 2^7251816 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 7251816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10654560).

7251816 is an abundant number, since it is smaller than the sum of its proper divisors (14057304).

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

7251816 is a wasteful number, since it uses less digits than its factorization.

7251816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146 (or 2142 counting only the distinct ones).

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

The square root of 7251816 is about 2692.9196051869. The cubic root of 7251816 is about 193.5599904800.

The spelling of 7251816 in words is "seven million, two hundred fifty-one thousand, eight hundred sixteen".