235515228 has 48 divisors (see below), whose sum is σ = 599943456. Its totient is φ = 71470080.

The previous prime is 235515227. The next prime is 235515253. The reversal of 235515228 is 822515532.

235515228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235515221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048 + ... + 21728.

It is an arithmetic number, because the mean of its divisors is an integer number (12498822).

Almost surely, 2^235515228 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 235515228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299971728).

235515228 is an abundant number, since it is smaller than the sum of its proper divisors (364428228).

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

235515228 is a wasteful number, since it uses less digits than its factorization.

235515228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20774 (or 20772 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 235515228 is about 15346.5054002532. The cubic root of 235515228 is about 617.5512394444.

The spelling of 235515228 in words is "two hundred thirty-five million, five hundred fifteen thousand, two hundred twenty-eight".