828028077 has 4 divisors (see below), whose sum is σ = 1104037440. Its totient is φ = 552018716.

The previous prime is 828028051. The next prime is 828028111. The reversal of 828028077 is 770820828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 828028077 - 2⁶ = 828028013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828028477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138004677 + ... + 138004682.

It is an arithmetic number, because the mean of its divisors is an integer number (276009360).

Almost surely, 2^828028077 is an apocalyptic number.

It is an amenable number.

828028077 is a deficient number, since it is larger than the sum of its proper divisors (276009363).

828028077 is a wasteful number, since it uses less digits than its factorization.

828028077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276009362.

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 828028077 is about 28775.4770073408. The cubic root of 828028077 is about 939.0348011023.

The spelling of 828028077 in words is "eight hundred twenty-eight million, twenty-eight thousand, seventy-seven".