229638746 has 4 divisors (see below), whose sum is σ = 344458122. Its totient is φ = 114819372.

The previous prime is 229638743. The next prime is 229638749. The reversal of 229638746 is 647836922.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (229638743) and next prime (229638749).

It can be written as a sum of positive squares in only one way, i.e., 194295721 + 35343025 = 13939^2 + 5945^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 229638746.

It is not an unprimeable number, because it can be changed into a prime (229638743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57409685 + ... + 57409688.

Almost surely, 2^229638746 is an apocalyptic number.

229638746 is a deficient number, since it is larger than the sum of its proper divisors (114819376).

229638746 is a wasteful number, since it uses less digits than its factorization.

229638746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114819375.

The product of its digits is 870912, while the sum is 47.

The square root of 229638746 is about 15153.8360160060. The cubic root of 229638746 is about 612.3716202406.

The spelling of 229638746 in words is "two hundred twenty-nine million, six hundred thirty-eight thousand, seven hundred forty-six".