7212880 has 40 divisors (see below), whose sum is σ = 17353800. Its totient is φ = 2784768.

The previous prime is 7212871. The next prime is 7212893. The reversal of 7212880 is 882127.

It can be written as a sum of positive squares in 4 ways, for example, as 179776 + 7033104 = 424^2 + 2652^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 766 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (433845).

Almost surely, 2^7212880 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 7212880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8676900).

7212880 is an abundant number, since it is smaller than the sum of its proper divisors (10140920).

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

7212880 is a wasteful number, since it uses less digits than its factorization.

7212880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 7212880 is about 2685.6805469005. The cubic root of 7212880 is about 193.2129518784.

The spelling of 7212880 in words is "seven million, two hundred twelve thousand, eight hundred eighty".