857049102 has 72 divisors (see below), whose sum is σ = 2326307256. Its totient is φ = 226031904.

The previous prime is 857049097. The next prime is 857049107. The reversal of 857049102 is 201940758.

It is an interprime number because it is at equal distance from previous prime (857049097) and next prime (857049107).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857049107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25908 + ... + 48839.

It is an arithmetic number, because the mean of its divisors is an integer number (32309823).

Almost surely, 2^857049102 is an apocalyptic number.

857049102 is an abundant number, since it is smaller than the sum of its proper divisors (1469258154).

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

857049102 is a wasteful number, since it uses less digits than its factorization.

857049102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74782 (or 74772 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 857049102 is about 29275.4009707809. The cubic root of 857049102 is about 949.8796161399.

The spelling of 857049102 in words is "eight hundred fifty-seven million, forty-nine thousand, one hundred two".