29112861 has 8 divisors (see below), whose sum is σ = 38850784. Its totient is φ = 19391760.

The previous prime is 29112859. The next prime is 29112869. The reversal of 29112861 is 16821192.

It is a happy number.

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

It is not a de Polignac number, because 29112861 - 2¹ = 29112859 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29112869) 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, 630 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (4856348).

Almost surely, 2^29112861 is an apocalyptic number.

It is an amenable number.

29112861 is a deficient number, since it is larger than the sum of its proper divisors (9737923).

29112861 is a wasteful number, since it uses less digits than its factorization.

29112861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411.

The product of its digits is 1728, while the sum is 30.

The square root of 29112861 is about 5395.6335123876. The cubic root of 29112861 is about 307.6297238372.

The spelling of 29112861 in words is "twenty-nine million, one hundred twelve thousand, eight hundred sixty-one".