850247128 has 8 divisors (see below), whose sum is σ = 1594213380. Its totient is φ = 425123560.

The previous prime is 850247113. The next prime is 850247149. The reversal of 850247128 is 821742058.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53140438 + ... + 53140453.

Almost surely, 2^850247128 is an apocalyptic number.

It is an amenable number.

850247128 is a deficient number, since it is larger than the sum of its proper divisors (743966252).

850247128 is a wasteful number, since it uses less digits than its factorization.

850247128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106280897 (or 106280893 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 850247128 is about 29158.9973764531. The cubic root of 850247128 is about 947.3600308414.

The spelling of 850247128 in words is "eight hundred fifty million, two hundred forty-seven thousand, one hundred twenty-eight".