229690 has 16 divisors (see below), whose sum is σ = 419328. Its totient is φ = 90576.

The previous prime is 229681. The next prime is 229693. The reversal of 229690 is 96922.

It is a super-2 number, since 2×229690² = 105514992200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (229693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919 + ... + 1141.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2²²⁹⁶⁹⁰ is an apocalyptic number.

229690 is a deficient number, since it is larger than the sum of its proper divisors (189638).

229690 is a wasteful number, since it uses less digits than its factorization.

229690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 229690 is about 479.2598460126. The cubic root of 229690 is about 61.2417176084.

It can be divided in two parts, 229 and 690, that added together give a palindrome (919).

The spelling of 229690 in words is "two hundred twenty-nine thousand, six hundred ninety".