828396140 has 96 divisors (see below), whose sum is σ = 2063625984. Its totient is φ = 275362560.

The previous prime is 828396139. The next prime is 828396157. The reversal of 828396140 is 41693828.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304667 + ... + 307373.

It is an arithmetic number, because the mean of its divisors is an integer number (21496104).

Almost surely, 2^828396140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 828396140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031812992).

828396140 is an abundant number, since it is smaller than the sum of its proper divisors (1235229844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

828396140 is a wasteful number, since it uses less digits than its factorization.

828396140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 828396140 is about 28781.8717250981. The cubic root of 828396140 is about 939.1739158569.

The spelling of 828396140 in words is "eight hundred twenty-eight million, three hundred ninety-six thousand, one hundred forty".