29447985 has 64 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 12752640.

The previous prime is 29447983. The next prime is 29447987. The reversal of 29447985 is 58974492.

It is an interprime number because it is at equal distance from previous prime (29447983) and next prime (29447987).

It is not a de Polignac number, because 29447985 - 2¹ = 29447983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29447983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 270111 + ... + 270219.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^29447985 is an apocalyptic number.

It is an amenable number.

29447985 is a deficient number, since it is larger than the sum of its proper divisors (27322575).

29447985 is a wasteful number, since it uses less digits than its factorization.

29447985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238.

The product of its digits is 725760, while the sum is 48.

The square root of 29447985 is about 5426.5997641249. The cubic root of 29447985 is about 308.8056192041.

The spelling of 29447985 in words is "twenty-nine million, four hundred forty-seven thousand, nine hundred eighty-five".