229270640 has 40 divisors (see below), whose sum is σ = 539816640. Its totient is φ = 90544896.

The previous prime is 229270609. The next prime is 229270649. The reversal of 229270640 is 46072922.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 229270597 and 229270606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229270649) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11819 + ... + 24458.

It is an arithmetic number, because the mean of its divisors is an integer number (13495416).

Almost surely, 2^229270640 is an apocalyptic number.

229270640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229270640 is an abundant number, since it is smaller than the sum of its proper divisors (310546000).

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

229270640 is a wasteful number, since it uses less digits than its factorization.

229270640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36369 (or 36363 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 229270640 is about 15141.6855072347. The cubic root of 229270640 is about 612.0442390451.

The spelling of 229270640 in words is "two hundred twenty-nine million, two hundred seventy thousand, six hundred forty".