857151516 has 48 divisors (see below), whose sum is σ = 2160787104. Its totient is φ = 262891776.

The previous prime is 857151413. The next prime is 857151517. The reversal of 857151516 is 615151758.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857151517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40786 + ... + 58118.

It is an arithmetic number, because the mean of its divisors is an integer number (45016398).

Almost surely, 2^857151516 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 857151516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1080393552).

857151516 is an abundant number, since it is smaller than the sum of its proper divisors (1303635588).

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

857151516 is a wasteful number, since it uses less digits than its factorization.

857151516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17670 (or 17668 counting only the distinct ones).

The product of its digits is 42000, while the sum is 39.

The square root of 857151516 is about 29277.1500662206. The cubic root of 857151516 is about 949.9174502601.

The spelling of 857151516 in words is "eight hundred fifty-seven million, one hundred fifty-one thousand, five hundred sixteen".