228653240 has 32 divisors (see below), whose sum is σ = 519032880. Its totient is φ = 90650112.

The previous prime is 228653177. The next prime is 228653311. The reversal of 228653240 is 42356822.

228653240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 228653197 and 228653206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20774 + ... + 29813.

Almost surely, 2^228653240 is an apocalyptic number.

228653240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228653240 is an abundant number, since it is smaller than the sum of its proper divisors (290379640).

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

228653240 is a wasteful number, since it uses less digits than its factorization.

228653240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50711 (or 50707 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 228653240 is about 15121.2843369867. The cubic root of 228653240 is about 611.4943564345.

The spelling of 228653240 in words is "two hundred twenty-eight million, six hundred fifty-three thousand, two hundred forty".