774628129 has 16 divisors (see below), whose sum is σ = 874633536. Its totient is φ = 679910400.

The previous prime is 774628117. The next prime is 774628159. The reversal of 774628129 is 921826477.

774628129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 774628129 - 2⁵ = 774628097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774628159) 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, 34894 + ... + 52600.

It is an arithmetic number, because the mean of its divisors is an integer number (54664596).

Almost surely, 2^774628129 is an apocalyptic number.

It is an amenable number.

774628129 is a deficient number, since it is larger than the sum of its proper divisors (100005407).

774628129 is a wasteful number, since it uses less digits than its factorization.

774628129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856.

The product of its digits is 338688, while the sum is 46.

The square root of 774628129 is about 27832.1420124287. The cubic root of 774628129 is about 918.3983352228.

The spelling of 774628129 in words is "seven hundred seventy-four million, six hundred twenty-eight thousand, one hundred twenty-nine".