828396157 has 2 divisors, whose sum is σ = 828396158. Its totient is φ = 828396156.

The previous prime is 828396139. The next prime is 828396187. The reversal of 828396157 is 751693828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792647716 + 35748441 = 28154^2 + 5979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828396157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 828396157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828396187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414198078 + 414198079.

It is an arithmetic number, because the mean of its divisors is an integer number (414198079).

Almost surely, 2^828396157 is an apocalyptic number.

It is an amenable number.

828396157 is a deficient number, since it is larger than the sum of its proper divisors (1).

828396157 is an equidigital number, since it uses as much as digits as its factorization.

828396157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 828396157 is about 28781.8720204229. The cubic root of 828396157 is about 939.1739222813.

The spelling of 828396157 in words is "eight hundred twenty-eight million, three hundred ninety-six thousand, one hundred fifty-seven".