228761436 has 12 divisors (see below), whose sum is σ = 533776712. Its totient is φ = 76253808.

The previous prime is 228761413. The next prime is 228761437. The reversal of 228761436 is 634167822.

It is a happy number.

228761436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 228761394 and 228761403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228761437) 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, 9531715 + ... + 9531738.

Almost surely, 2^228761436 is an apocalyptic number.

It is an amenable number.

228761436 is an abundant number, since it is smaller than the sum of its proper divisors (305015276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228761436 is a wasteful number, since it uses less digits than its factorization.

228761436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19063460 (or 19063458 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 228761436 is about 15124.8615200272. The cubic root of 228761436 is about 611.5907918499.

The spelling of 228761436 in words is "two hundred twenty-eight million, seven hundred sixty-one thousand, four hundred thirty-six".