228507436 has 12 divisors (see below), whose sum is σ = 402283728. Its totient is φ = 113569232.

The previous prime is 228507427. The next prime is 228507437. The reversal of 228507436 is 634705822.

It is a junction number, because it is equal to n+sod(n) for n = 228507395 and 228507404.

It is not an unprimeable number, because it can be changed into a prime (228507437) 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, 170371 + ... + 171706.

It is an arithmetic number, because the mean of its divisors is an integer number (33523644).

Almost surely, 2^228507436 is an apocalyptic number.

It is an amenable number.

228507436 is a deficient number, since it is larger than the sum of its proper divisors (173776292).

228507436 is a wasteful number, since it uses less digits than its factorization.

228507436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342248 (or 342246 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 228507436 is about 15116.4624168487. The cubic root of 228507436 is about 611.3643527648.

The spelling of 228507436 in words is "two hundred twenty-eight million, five hundred seven thousand, four hundred thirty-six".