29981147 has 8 divisors (see below), whose sum is σ = 34365696. Its totient is φ = 25621992.

The previous prime is 29981131. The next prime is 29981153. The reversal of 29981147 is 74118992.

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 29981147 - 2⁴ = 29981131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29921147) 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, 3743 + ... + 8600.

It is an arithmetic number, because the mean of its divisors is an integer number (4295712).

Almost surely, 2^29981147 is an apocalyptic number.

29981147 is a deficient number, since it is larger than the sum of its proper divisors (4384549).

29981147 is a wasteful number, since it uses less digits than its factorization.

29981147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12697.

The product of its digits is 36288, while the sum is 41.

The square root of 29981147 is about 5475.5042690149. The cubic root of 29981147 is about 310.6581473398.

The spelling of 29981147 in words is "twenty-nine million, nine hundred eighty-one thousand, one hundred forty-seven".