229729784256 has 420 divisors, whose sum is σ = 813616633368. Its totient is φ = 63860493312.

The previous prime is 229729784197. The next prime is 229729784269. The reversal of 229729784256 is 652487927922.

229729784256 is a `hidden beast` number, since 2 + 2 + 97 + 297 + 8 + 4 + 256 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 229729784193 and 229729784202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9386371 + ... + 9410813.

Almost surely, 2^229729784256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229729784256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406808316684).

229729784256 is an abundant number, since it is smaller than the sum of its proper divisors (583886849112).

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

229729784256 is a wasteful number, since it uses less digits than its factorization.

229729784256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24518 (or 24492 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The spelling of 229729784256 in words is "two hundred twenty-nine billion, seven hundred twenty-nine million, seven hundred eighty-four thousand, two hundred fifty-six".