228353238440 has 32 divisors (see below), whose sum is σ = 513902638080. Its totient is φ = 91322121792.

The previous prime is 228353238437. The next prime is 228353238523. The reversal of 228353238440 is 44832353822.

It is a junction number, because it is equal to n+sod(n) for n = 228353238391 and 228353238400.

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, 405464 + ... + 788103.

It is an arithmetic number, because the mean of its divisors is an integer number (16059457440).

Almost surely, 2^228353238440 is an apocalyptic number.

228353238440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228353238440 is an abundant number, since it is smaller than the sum of its proper divisors (285549399640).

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

228353238440 is a wasteful number, since it uses less digits than its factorization.

228353238440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198361 (or 1198357 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 44.

The spelling of 228353238440 in words is "two hundred twenty-eight billion, three hundred fifty-three million, two hundred thirty-eight thousand, four hundred forty".