228057439 has 4 divisors (see below), whose sum is σ = 229698280. Its totient is φ = 226416600.

The previous prime is 228057433. The next prime is 228057449. The reversal of 228057439 is 934750822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228057439 - 2¹³ = 228049247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228057433) 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, 820212 + ... + 820489.

It is an arithmetic number, because the mean of its divisors is an integer number (57424570).

Almost surely, 2^228057439 is an apocalyptic number.

228057439 is a deficient number, since it is larger than the sum of its proper divisors (1640841).

228057439 is a wasteful number, since it uses less digits than its factorization.

228057439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640840.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 228057439 is about 15101.5707461178. The cubic root of 228057439 is about 610.9627715019.

The spelling of 228057439 in words is "two hundred twenty-eight million, fifty-seven thousand, four hundred thirty-nine".