228952240 has 80 divisors (see below), whose sum is σ = 584891136. Its totient is φ = 82656000.

The previous prime is 228952219. The next prime is 228952247. The reversal of 228952240 is 42259822.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 228952196 and 228952205.

It is not an unprimeable number, because it can be changed into a prime (228952247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132019 + ... + 133741.

Almost surely, 2^228952240 is an apocalyptic number.

228952240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228952240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292445568).

228952240 is an abundant number, since it is smaller than the sum of its proper divisors (355938896).

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

228952240 is a wasteful number, since it uses less digits than its factorization.

228952240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 228952240 is about 15131.1678333168. The cubic root of 228952240 is about 611.7607819536.

The spelling of 228952240 in words is "two hundred twenty-eight million, nine hundred fifty-two thousand, two hundred forty".