29981995 has 8 divisors (see below), whose sum is σ = 37542816. Its totient is φ = 22942656.

The previous prime is 29981977. The next prime is 29982023. The reversal of 29981995 is 59918992.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29981995 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130242 + ... + 130471.

It is an arithmetic number, because the mean of its divisors is an integer number (4692852).

Almost surely, 2^29981995 is an apocalyptic number.

29981995 is a deficient number, since it is larger than the sum of its proper divisors (7560821).

29981995 is a wasteful number, since it uses less digits than its factorization.

29981995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260741.

The product of its digits is 524880, while the sum is 52.

The square root of 29981995 is about 5475.5817042575. The cubic root of 29981995 is about 310.6610762429.

It can be divided in two parts, 29981 and 995, that added together give a square (30976 = 176²).

The spelling of 29981995 in words is "twenty-nine million, nine hundred eighty-one thousand, nine hundred ninety-five".