764406280 has 64 divisors (see below), whose sum is σ = 1911729600. Its totient is φ = 272712960.

The previous prime is 764406229. The next prime is 764406281. The reversal of 764406280 is 82604467.

764406280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (764406281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6931 + ... + 39709.

It is an arithmetic number, because the mean of its divisors is an integer number (29870775).

Almost surely, 2^764406280 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 764406280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955864800).

764406280 is an abundant number, since it is smaller than the sum of its proper divisors (1147323320).

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

764406280 is a wasteful number, since it uses less digits than its factorization.

764406280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32854 (or 32850 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 764406280 is about 27647.8982926370. The cubic root of 764406280 is about 914.3407635660.

It can be divided in two parts, 764 and 406280, that added together give a square (407044 = 638²).

The spelling of 764406280 in words is "seven hundred sixty-four million, four hundred six thousand, two hundred eighty".