29681423 has 4 divisors (see below), whose sum is σ = 29693568. Its totient is φ = 29669280.

The previous prime is 29681419. The next prime is 29681453. The reversal of 29681423 is 32418692.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 29681423 - 2² = 29681419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29681453) 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, 986 + ... + 7767.

It is an arithmetic number, because the mean of its divisors is an integer number (7423392).

Almost surely, 2^29681423 is an apocalyptic number.

29681423 is a deficient number, since it is larger than the sum of its proper divisors (12145).

29681423 is an equidigital number, since it uses as much as digits as its factorization.

29681423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144.

The product of its digits is 20736, while the sum is 35.

The square root of 29681423 is about 5448.0659871187. The cubic root of 29681423 is about 309.6194532653.

The spelling of 29681423 in words is "twenty-nine million, six hundred eighty-one thousand, four hundred twenty-three".