828280047 has 8 divisors (see below), whose sum is σ = 1262141056. Its totient is φ = 473302872.

The previous prime is 828280043. The next prime is 828280051. The reversal of 828280047 is 740082828.

It is an interprime number because it is at equal distance from previous prime (828280043) and next prime (828280051).

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

It is not a de Polignac number, because 828280047 - 2² = 828280043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 828279987 and 828280014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828280043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19720933 + ... + 19720974.

It is an arithmetic number, because the mean of its divisors is an integer number (157767632).

Almost surely, 2^828280047 is an apocalyptic number.

828280047 is a deficient number, since it is larger than the sum of its proper divisors (433861009).

828280047 is a wasteful number, since it uses less digits than its factorization.

828280047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39441917.

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 828280047 is about 28779.8548814965. The cubic root of 828280047 is about 939.1300412717.

It can be divided in two parts, 828 and 280047, that added together give a triangular number (280875 = T₇₄₉).

The spelling of 828280047 in words is "eight hundred twenty-eight million, two hundred eighty thousand, forty-seven".