850231128 has 32 divisors (see below), whose sum is σ = 2170805760. Its totient is φ = 277380000.

The previous prime is 850231127. The next prime is 850231147. The reversal of 850231128 is 821132058.

It is a junction number, because it is equal to n+sod(n) for n = 850231095 and 850231104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850231121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375748 + ... + 378003.

It is an arithmetic number, because the mean of its divisors is an integer number (67837680).

Almost surely, 2^850231128 is an apocalyptic number.

It is an amenable number.

850231128 is an abundant number, since it is smaller than the sum of its proper divisors (1320574632).

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

850231128 is a wasteful number, since it uses less digits than its factorization.

850231128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753807 (or 753803 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 850231128 is about 29158.7230173065. The cubic root of 850231128 is about 947.3540883121.

The spelling of 850231128 in words is "eight hundred fifty million, two hundred thirty-one thousand, one hundred twenty-eight".