764392940 has 48 divisors (see below), whose sum is σ = 1663495680. Its totient is φ = 294840000.

The previous prime is 764392927. The next prime is 764392949. The reversal of 764392940 is 49293467.

It is a junction number, because it is equal to n+sod(n) for n = 764392891 and 764392900.

It is not an unprimeable number, because it can be changed into a prime (764392949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62315 + ... + 73565.

It is an arithmetic number, because the mean of its divisors is an integer number (34656160).

Almost surely, 2^764392940 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 764392940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831747840).

764392940 is an abundant number, since it is smaller than the sum of its proper divisors (899102740).

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

764392940 is a wasteful number, since it uses less digits than its factorization.

764392940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11382 (or 11380 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 764392940 is about 27647.6570435905. The cubic root of 764392940 is about 914.3354446769.

The spelling of 764392940 in words is "seven hundred sixty-four million, three hundred ninety-two thousand, nine hundred forty".