229215240 has 384 divisors, whose sum is σ = 862617600. Its totient is φ = 52462080.

The previous prime is 229215229. The next prime is 229215253. The reversal of 229215240 is 42512922.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4876897 + ... + 4876943.

It is an arithmetic number, because the mean of its divisors is an integer number (2246400).

Almost surely, 2^229215240 is an apocalyptic number.

229215240 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 229215240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431308800).

229215240 is an abundant number, since it is smaller than the sum of its proper divisors (633402360).

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

229215240 is a wasteful number, since it uses less digits than its factorization.

229215240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 229215240 is about 15139.8560098833. The cubic root of 229215240 is about 611.9949378025.

The spelling of 229215240 in words is "two hundred twenty-nine million, two hundred fifteen thousand, two hundred forty".