229040240 has 80 divisors (see below), whose sum is σ = 625647456. Its totient is φ = 76876800.

The previous prime is 229040239. The next prime is 229040291. The reversal of 229040240 is 42040922.

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

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1430 + ... + 21450.

Almost surely, 2^229040240 is an apocalyptic number.

229040240 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 229040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312823728).

229040240 is an abundant number, since it is smaller than the sum of its proper divisors (396607216).

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

229040240 is a wasteful number, since it uses less digits than its factorization.

229040240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20058 (or 20052 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 229040240 is about 15134.0754590427. The cubic root of 229040240 is about 611.8391506314.

The spelling of 229040240 in words is "two hundred twenty-nine million, forty thousand, two hundred forty".