228434397 has 16 divisors (see below), whose sum is σ = 320939520. Its totient is φ = 144126000.

The previous prime is 228434383. The next prime is 228434417. The reversal of 228434397 is 793434822.

It is not a de Polignac number, because 228434397 - 2²⁶ = 161325533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228434377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88272 + ... + 90822.

It is an arithmetic number, because the mean of its divisors is an integer number (20058720).

Almost surely, 2^228434397 is an apocalyptic number.

It is an amenable number.

228434397 is a deficient number, since it is larger than the sum of its proper divisors (92505123).

228434397 is a wasteful number, since it uses less digits than its factorization.

228434397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144.

The product of its digits is 290304, while the sum is 42.

The square root of 228434397 is about 15114.0463476860. The cubic root of 228434397 is about 611.2992079856.

The spelling of 228434397 in words is "two hundred twenty-eight million, four hundred thirty-four thousand, three hundred ninety-seven".