228699240 has 256 divisors, whose sum is σ = 873400320. Its totient is φ = 46525440.

The previous prime is 228699221. The next prime is 228699259. The reversal of 228699240 is 42996822.

It is an interprime number because it is at equal distance from previous prime (228699221) and next prime (228699259).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 228699192 and 228699201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 489487 + ... + 489953.

It is an arithmetic number, because the mean of its divisors is an integer number (3411720).

Almost surely, 2^228699240 is an apocalyptic number.

228699240 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 228699240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436700160).

228699240 is an abundant number, since it is smaller than the sum of its proper divisors (644701080).

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

228699240 is a wasteful number, since it uses less digits than its factorization.

228699240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 228699240 is about 15122.8052953148. The cubic root of 228699240 is about 611.5353600875.

The spelling of 228699240 in words is "two hundred twenty-eight million, six hundred ninety-nine thousand, two hundred forty".