228737940 has 48 divisors (see below), whose sum is σ = 645164352. Its totient is φ = 60549376.

The previous prime is 228737939. The next prime is 228737953. The reversal of 228737940 is 49737822.

228737940 is digitally balanced in base 3, 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 = 228737892 and 228737901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5694 + ... + 22133.

It is an arithmetic number, because the mean of its divisors is an integer number (13440924).

Almost surely, 2^228737940 is an apocalyptic number.

228737940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228737940 is an abundant number, since it is smaller than the sum of its proper divisors (416426412).

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

228737940 is a wasteful number, since it uses less digits than its factorization.

228737940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27976 (or 27974 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 228737940 is about 15124.0847656974. The cubic root of 228737940 is about 611.5698523806.

The spelling of 228737940 in words is "two hundred twenty-eight million, seven hundred thirty-seven thousand, nine hundred forty".