228673537 has 4 divisors (see below), whose sum is σ = 228704256. Its totient is φ = 228642820.

The previous prime is 228673519. The next prime is 228673553. The reversal of 228673537 is 735376822.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 735376822 = 2 ⋅367688411.

It is a cyclic number.

It is not a de Polignac number, because 228673537 - 2¹¹ = 228671489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228673493 and 228673502.

It is not an unprimeable number, because it can be changed into a prime (228673517) 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, 3648 + ... + 21694.

It is an arithmetic number, because the mean of its divisors is an integer number (57176064).

Almost surely, 2^228673537 is an apocalyptic number.

It is an amenable number.

228673537 is a deficient number, since it is larger than the sum of its proper divisors (30719).

228673537 is a wasteful number, since it uses less digits than its factorization.

228673537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30718.

The product of its digits is 423360, while the sum is 43.

The square root of 228673537 is about 15121.9554621749. The cubic root of 228673537 is about 611.5124495286.

The spelling of 228673537 in words is "two hundred twenty-eight million, six hundred seventy-three thousand, five hundred thirty-seven".