228345537 has 24 divisors (see below), whose sum is σ = 363749376. Its totient is φ = 126953568.

The previous prime is 228345529. The next prime is 228345539. The reversal of 228345537 is 735543822.

It is not a de Polignac number, because 228345537 - 2³ = 228345529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228345495 and 228345504.

It is not an unprimeable number, because it can be changed into a prime (228345539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15553 + ... + 26430.

It is an arithmetic number, because the mean of its divisors is an integer number (15156224).

Almost surely, 2^228345537 is an apocalyptic number.

It is an amenable number.

228345537 is a deficient number, since it is larger than the sum of its proper divisors (135403839).

228345537 is a wasteful number, since it uses less digits than its factorization.

228345537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42037 (or 42030 counting only the distinct ones).

The product of its digits is 201600, while the sum is 39.

The square root of 228345537 is about 15111.1064121725. The cubic root of 228345537 is about 611.2199334494.

The spelling of 228345537 in words is "two hundred twenty-eight million, three hundred forty-five thousand, five hundred thirty-seven".