185228394 has 48 divisors (see below), whose sum is σ = 415044000. Its totient is φ = 55019328.

The previous prime is 185228389. The next prime is 185228411. The reversal of 185228394 is 493822581.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 26257 + ... + 32555.

It is an arithmetic number, because the mean of its divisors is an integer number (8646750).

Almost surely, 2^185228394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 185228394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207522000).

185228394 is an abundant number, since it is smaller than the sum of its proper divisors (229815606).

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

185228394 is a wasteful number, since it uses less digits than its factorization.

185228394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359 (or 6346 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 185228394 is about 13609.8638494292. The cubic root of 185228394 is about 570.0363103985.

The spelling of 185228394 in words is "one hundred eighty-five million, two hundred twenty-eight thousand, three hundred ninety-four".