229835720 has 16 divisors (see below), whose sum is σ = 517130460. Its totient is φ = 91934272.

The previous prime is 229835717. The next prime is 229835773. The reversal of 229835720 is 27538922.

It can be written as a sum of positive squares in 2 ways, for example, as 229764964 + 70756 = 15158^2 + 266^2 .

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 3 ways as a sum of consecutive naturals, for example, 2872907 + ... + 2872986.

Almost surely, 2^229835720 is an apocalyptic number.

229835720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229835720 is an abundant number, since it is smaller than the sum of its proper divisors (287294740).

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

229835720 is a wasteful number, since it uses less digits than its factorization.

229835720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745904 (or 5745900 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 229835720 is about 15160.3337694129. Note that the first 3 decimals coincide. The cubic root of 229835720 is about 612.5466586696.

The spelling of 229835720 in words is "two hundred twenty-nine million, eight hundred thirty-five thousand, seven hundred twenty".