828423123 has 16 divisors (see below), whose sum is σ = 1268400000. Its totient is φ = 475649280.

The previous prime is 828423119. The next prime is 828423139. The reversal of 828423123 is 321324828.

It is not a de Polignac number, because 828423123 - 2² = 828423119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (828423103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659998 + ... + 661251.

It is an arithmetic number, because the mean of its divisors is an integer number (79275000).

Almost surely, 2^828423123 is an apocalyptic number.

828423123 is a deficient number, since it is larger than the sum of its proper divisors (439976877).

828423123 is a wasteful number, since it uses less digits than its factorization.

828423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321282.

The product of its digits is 18432, while the sum is 33.

The square root of 828423123 is about 28782.3404711987. The cubic root of 828423123 is about 939.1841128522.

The spelling of 828423123 in words is "eight hundred twenty-eight million, four hundred twenty-three thousand, one hundred twenty-three".