235728090 has 128 divisors (see below), whose sum is σ = 682214400. Its totient is φ = 57576960.

The previous prime is 235728089. The next prime is 235728109. The reversal of 235728090 is 90827532.

It is a happy number.

235728090 is a `hidden beast` number, since 2 + 3 + 572 + 80 + 9 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 838750 + ... + 839030.

It is an arithmetic number, because the mean of its divisors is an integer number (5329800).

Almost surely, 2^235728090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 235728090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341107200).

235728090 is an abundant number, since it is smaller than the sum of its proper divisors (446486310).

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

235728090 is a wasteful number, since it uses less digits than its factorization.

235728090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 235728090 is about 15353.4390284392. The cubic root of 235728090 is about 617.7372339408.

The spelling of 235728090 in words is "two hundred thirty-five million, seven hundred twenty-eight thousand, ninety".