29238981 has 4 divisors (see below), whose sum is σ = 38985312. Its totient is φ = 19492652.

The previous prime is 29238977. The next prime is 29239009. The reversal of 29238981 is 18983292.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29238981 - 2² = 29238977 is a prime.

It is a super-2 number, since 2×29238981² = 1709836019836722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29238901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4873161 + ... + 4873166.

It is an arithmetic number, because the mean of its divisors is an integer number (9746328).

Almost surely, 2^29238981 is an apocalyptic number.

It is an amenable number.

29238981 is a deficient number, since it is larger than the sum of its proper divisors (9746331).

29238981 is an equidigital number, since it uses as much as digits as its factorization.

29238981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746330.

The product of its digits is 62208, while the sum is 42.

The square root of 29238981 is about 5407.3081103262. The cubic root of 29238981 is about 308.0733120868.

The spelling of 29238981 in words is "twenty-nine million, two hundred thirty-eight thousand, nine hundred eighty-one".