7772280 has 64 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 2056320.

The previous prime is 7772279. The next prime is 7772309. The reversal of 7772280 is 822777.

It is a happy number.

7772280 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28545 + ... + 28815.

It is an arithmetic number, because the mean of its divisors is an integer number (367200).

Almost surely, 2^7772280 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 7772280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11750400).

7772280 is an abundant number, since it is smaller than the sum of its proper divisors (15728520).

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

7772280 is a wasteful number, since it uses less digits than its factorization.

7772280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 7772280 is about 2787.8809156777. The cubic root of 7772280 is about 198.0840373806.

The spelling of 7772280 in words is "seven million, seven hundred seventy-two thousand, two hundred eighty".