29442881 has 8 divisors (see below), whose sum is σ = 31750824. Its totient is φ = 27141120.

The previous prime is 29442863. The next prime is 29442883. The reversal of 29442881 is 18824492.

It can be written as a sum of positive squares in 4 ways, for example, as 1985281 + 27457600 = 1409^2 + 5240^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 29442881 - 2¹⁸ = 29180737 is a prime.

It is a super-2 number, since 2×29442881² = 1733766483160322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29442883) 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, 14891 + ... + 16751.

It is an arithmetic number, because the mean of its divisors is an integer number (3968853).

Almost surely, 2^29442881 is an apocalyptic number.

It is an amenable number.

29442881 is a deficient number, since it is larger than the sum of its proper divisors (2307943).

29442881 is a wasteful number, since it uses less digits than its factorization.

29442881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091.

The product of its digits is 36864, while the sum is 38.

The square root of 29442881 is about 5426.1294676777. The cubic root of 29442881 is about 308.7877771803.

The spelling of 29442881 in words is "twenty-nine million, four hundred forty-two thousand, eight hundred eighty-one".