772838 has 8 divisors (see below), whose sum is σ = 1264680. Its totient is φ = 351280.

The previous prime is 772789. The next prime is 772843. The reversal of 772838 is 838277.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 772798 and 772807.

It is a congruent number.

It is an unprimeable number.

772838 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17543 + ... + 17586.

It is an arithmetic number, because the mean of its divisors is an integer number (158085).

2⁷⁷²⁸³⁸ is an apocalyptic number.

772838 is a deficient number, since it is larger than the sum of its proper divisors (491842).

772838 is a wasteful number, since it uses less digits than its factorization.

772838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35142.

The product of its digits is 18816, while the sum is 35.

The square root of 772838 is about 879.1120520161. The cubic root of 772838 is about 91.7690331170.

The spelling of 772838 in words is "seven hundred seventy-two thousand, eight hundred thirty-eight".