764400026 has 32 divisors (see below), whose sum is σ = 1269490320. Its totient is φ = 343010304.

The previous prime is 764400011. The next prime is 764400029. The reversal of 764400026 is 620004467.

It can be written as a sum of positive squares in 8 ways, for example, as 338596801 + 425803225 = 18401^2 + 20635^2 .

It is not an unprimeable number, because it can be changed into a prime (764400029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153260 + ... + 158168.

Almost surely, 2^764400026 is an apocalyptic number.

764400026 is a deficient number, since it is larger than the sum of its proper divisors (505090294).

764400026 is a wasteful number, since it uses less digits than its factorization.

764400026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 764400026 is about 27647.7851915845. The cubic root of 764400026 is about 914.3382699955.

The spelling of 764400026 in words is "seven hundred sixty-four million, four hundred thousand, twenty-six".