828731398 has 16 divisors (see below), whose sum is σ = 1427480640. Its totient is φ = 356869800.

The previous prime is 828731363. The next prime is 828731399. The reversal of 828731398 is 893137828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828731399) 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, 990888 + ... + 991723.

It is an arithmetic number, because the mean of its divisors is an integer number (89217540).

Almost surely, 2^828731398 is an apocalyptic number.

828731398 is a deficient number, since it is larger than the sum of its proper divisors (598749242).

828731398 is a wasteful number, since it uses less digits than its factorization.

828731398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982643.

The product of its digits is 580608, while the sum is 49.

The square root of 828731398 is about 28787.6952533543. The cubic root of 828731398 is about 939.3005956287.

The spelling of 828731398 in words is "eight hundred twenty-eight million, seven hundred thirty-one thousand, three hundred ninety-eight".