828146521 has 8 divisors (see below), whose sum is σ = 880722080. Its totient is φ = 776469888.

The previous prime is 828146519. The next prime is 828146531. The reversal of 828146521 is 125641828.

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

It is a cyclic number.

It is not a de Polignac number, because 828146521 - 2¹ = 828146519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828146531) 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, 222831 + ... + 226516.

It is an arithmetic number, because the mean of its divisors is an integer number (110090260).

Almost surely, 2^828146521 is an apocalyptic number.

It is an amenable number.

828146521 is a deficient number, since it is larger than the sum of its proper divisors (52575559).

828146521 is a wasteful number, since it uses less digits than its factorization.

828146521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449463.

The product of its digits is 30720, while the sum is 37.

The square root of 828146521 is about 28777.5350056255. The cubic root of 828146521 is about 939.0795732295.

The spelling of 828146521 in words is "eight hundred twenty-eight million, one hundred forty-six thousand, five hundred twenty-one".