764280 has 96 divisors (see below), whose sum is σ = 2723760. Its totient is φ = 184320.

The previous prime is 764273. The next prime is 764293. The reversal of 764280 is 82467.

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 23 ways as a sum of consecutive naturals, for example, 3864 + ... + 4056.

2⁷⁶⁴²⁸⁰ 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 764280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361880).

764280 is an abundant number, since it is smaller than the sum of its proper divisors (1959480).

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

764280 is a wasteful number, since it uses less digits than its factorization.

764280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 764280 is about 874.2310907306. The cubic root of 764280 is about 91.4290411062.

It can be divided in two parts, 76 and 4280, that added together give a square (4356 = 66²).

The spelling of 764280 in words is "seven hundred sixty-four thousand, two hundred eighty".