229040840 has 128 divisors (see below), whose sum is σ = 619833600. Its totient is φ = 74511360.

The previous prime is 229040837. The next prime is 229040843. The reversal of 229040840 is 48040922.

229040840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (229040837) and next prime (229040843).

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (229040843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 543830 + ... + 544250.

It is an arithmetic number, because the mean of its divisors is an integer number (4842450).

Almost surely, 2^229040840 is an apocalyptic number.

229040840 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 229040840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309916800).

229040840 is an abundant number, since it is smaller than the sum of its proper divisors (390792760).

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

229040840 is a wasteful number, since it uses less digits than its factorization.

229040840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 229040840 is about 15134.0952818462. The cubic root of 229040840 is about 611.8396848943.

The spelling of 229040840 in words is "two hundred twenty-nine million, forty thousand, eight hundred forty".