228649240 has 16 divisors (see below), whose sum is σ = 514460880. Its totient is φ = 91459680.

The previous prime is 228649231. The next prime is 228649243. The reversal of 228649240 is 42946822.

228649240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228649240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228649243) 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, 2858076 + ... + 2858155.

It is an arithmetic number, because the mean of its divisors is an integer number (32153805).

Almost surely, 2^228649240 is an apocalyptic number.

228649240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228649240 is an abundant number, since it is smaller than the sum of its proper divisors (285811640).

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

228649240 is a wasteful number, since it uses less digits than its factorization.

228649240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716242 (or 5716238 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 228649240 is about 15121.1520725109. The cubic root of 228649240 is about 611.4907906396.

The spelling of 228649240 in words is "two hundred twenty-eight million, six hundred forty-nine thousand, two hundred forty".