185035428 has 120 divisors (see below), whose sum is σ = 512265600. Its totient is φ = 58145472.

The previous prime is 185035423. The next prime is 185035439. The reversal of 185035428 is 824530581.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 185035392 and 185035401.

It is not an unprimeable number, because it can be changed into a prime (185035423) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 441403 + ... + 441821.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 2^185035428 is an apocalyptic number.

185035428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 185035428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256132800).

185035428 is an abundant number, since it is smaller than the sum of its proper divisors (327230172).

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

185035428 is a wasteful number, since it uses less digits than its factorization.

185035428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 185035428 is about 13602.7728055717. The cubic root of 185035428 is about 569.8382920782.

The spelling of 185035428 in words is "one hundred eighty-five million, thirty-five thousand, four hundred twenty-eight".