235428161 has 4 divisors (see below), whose sum is σ = 245664192. Its totient is φ = 225192132.

The previous prime is 235428157. The next prime is 235428163. The reversal of 235428161 is 161824532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 235428161 - 2² = 235428157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235428163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5117981 + ... + 5118026.

It is an arithmetic number, because the mean of its divisors is an integer number (61416048).

Almost surely, 2^235428161 is an apocalyptic number.

It is an amenable number.

235428161 is a deficient number, since it is larger than the sum of its proper divisors (10236031).

235428161 is a wasteful number, since it uses less digits than its factorization.

235428161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236030.

The product of its digits is 11520, while the sum is 32.

The square root of 235428161 is about 15343.6684335918. The cubic root of 235428161 is about 617.4751297714.

The spelling of 235428161 in words is "two hundred thirty-five million, four hundred twenty-eight thousand, one hundred sixty-one".