29808231 has 8 divisors (see below), whose sum is σ = 40138224. Its totient is φ = 19675200.

The previous prime is 29808223. The next prime is 29808239. The reversal of 29808231 is 13280892.

It is an interprime number because it is at equal distance from previous prime (29808223) and next prime (29808239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29808231 - 2³ = 29808223 is a prime.

It is a super-2 number, since 2×29808231² = 1777061270698722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29808192 and 29808201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29808239) 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, 48886 + ... + 49491.

It is an arithmetic number, because the mean of its divisors is an integer number (5017278).

Almost surely, 2^29808231 is an apocalyptic number.

29808231 is a deficient number, since it is larger than the sum of its proper divisors (10329993).

29808231 is a wasteful number, since it uses less digits than its factorization.

29808231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98481.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 29808231 is about 5459.6914747997. The cubic root of 29808231 is about 310.0597560838.

It can be divided in two parts, 2980 and 8231, that added together give a palindrome (11211).

The spelling of 29808231 in words is "twenty-nine million, eight hundred eight thousand, two hundred thirty-one".