828764408 has 16 divisors (see below), whose sum is σ = 1566170880. Its totient is φ = 411118848.

The previous prime is 828764393. The next prime is 828764423. The reversal of 828764408 is 804467828.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (828764393) and next prime (828764423).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406841 + ... + 408872.

It is an arithmetic number, because the mean of its divisors is an integer number (97885680).

Almost surely, 2^828764408 is an apocalyptic number.

It is an amenable number.

828764408 is a deficient number, since it is larger than the sum of its proper divisors (737406472).

828764408 is a wasteful number, since it uses less digits than its factorization.

828764408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815846 (or 815842 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 828764408 is about 28788.2685828794. The cubic root of 828764408 is about 939.3130668593.

The spelling of 828764408 in words is "eight hundred twenty-eight million, seven hundred sixty-four thousand, four hundred eight".