850123428 has 96 divisors (see below), whose sum is σ = 2486550528. Its totient is φ = 219609600.

The previous prime is 850123427. The next prime is 850123481. The reversal of 850123428 is 824321058.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (850123427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174076 + ... + 178892.

It is an arithmetic number, because the mean of its divisors is an integer number (25901568).

Almost surely, 2^850123428 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 850123428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243275264).

850123428 is an abundant number, since it is smaller than the sum of its proper divisors (1636427100).

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

850123428 is a wasteful number, since it uses less digits than its factorization.

850123428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033 (or 5031 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 850123428 is about 29156.8761701249. The cubic root of 850123428 is about 947.3140857213.

The spelling of 850123428 in words is "eight hundred fifty million, one hundred twenty-three thousand, four hundred twenty-eight".