228523641 has 8 divisors (see below), whose sum is σ = 304791744. Its totient is φ = 152302320.

The previous prime is 228523637. The next prime is 228523643. The reversal of 228523641 is 146325822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228523641 - 2² = 228523637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228523643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995 + ... + 21471.

It is an arithmetic number, because the mean of its divisors is an integer number (38098968).

Almost surely, 2^228523641 is an apocalyptic number.

It is an amenable number.

228523641 is a deficient number, since it is larger than the sum of its proper divisors (76268103).

228523641 is a wasteful number, since it uses less digits than its factorization.

228523641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23391.

The product of its digits is 23040, while the sum is 33.

The square root of 228523641 is about 15116.9984123833. The cubic root of 228523641 is about 611.3788044099.

The spelling of 228523641 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, six hundred forty-one".