229865636 has 144 divisors (see below), whose sum is σ = 578083968. Its totient is φ = 77552640.

The previous prime is 229865633. The next prime is 229865641. The reversal of 229865636 is 636568922.

It is a super-2 number, since 2×229865636² = 105676421227368992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (229865633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 748595 + ... + 748901.

It is an arithmetic number, because the mean of its divisors is an integer number (4014472).

Almost surely, 2^229865636 is an apocalyptic number.

229865636 is a gapful number since it is divisible by the number (26) 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 229865636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289041984).

229865636 is an abundant number, since it is smaller than the sum of its proper divisors (348218332).

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

229865636 is a wasteful number, since it uses less digits than its factorization.

229865636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 357 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 229865636 is about 15161.3203910477. The cubic root of 229865636 is about 612.5732343920.

The spelling of 229865636 in words is "two hundred twenty-nine million, eight hundred sixty-five thousand, six hundred thirty-six".