29285231 has 4 divisors (see below), whose sum is σ = 29722392. Its totient is φ = 28848072.

The previous prime is 29285227. The next prime is 29285261. The reversal of 29285231 is 13258292.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 29285231 - 2² = 29285227 is a prime.

It is a super-2 number, since 2×29285231² = 1715249509446722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29285261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218480 + ... + 218613.

It is an arithmetic number, because the mean of its divisors is an integer number (7430598).

Almost surely, 2^29285231 is an apocalyptic number.

29285231 is a deficient number, since it is larger than the sum of its proper divisors (437161).

29285231 is an equidigital number, since it uses as much as digits as its factorization.

29285231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437160.

The product of its digits is 8640, while the sum is 32.

The square root of 29285231 is about 5411.5830401094. The cubic root of 29285231 is about 308.2356625305.

The spelling of 29285231 in words is "twenty-nine million, two hundred eighty-five thousand, two hundred thirty-one".