29001881 has 8 divisors (see below), whose sum is σ = 30785184. Its totient is φ = 27227200.

The previous prime is 29001877. The next prime is 29001887. The reversal of 29001881 is 18810092.

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

It is not a de Polignac number, because 29001881 - 2² = 29001877 is a prime.

It is a super-2 number, since 2×29001881² = 1682218203076322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29001887) 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, 5606 + ... + 9456.

It is an arithmetic number, because the mean of its divisors is an integer number (3848148).

Almost surely, 2^29001881 is an apocalyptic number.

It is an amenable number.

29001881 is a deficient number, since it is larger than the sum of its proper divisors (1783303).

29001881 is a wasteful number, since it uses less digits than its factorization.

29001881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 29001881 is about 5385.3394507682. The cubic root of 29001881 is about 307.2383249858.

The spelling of 29001881 in words is "twenty-nine million, one thousand, eight hundred eighty-one".