29985945 has 32 divisors (see below), whose sum is σ = 52614144. Its totient is φ = 14462400.

The previous prime is 29985941. The next prime is 29985973. The reversal of 29985945 is 54958992.

It is not a de Polignac number, because 29985945 - 2² = 29985941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29985941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43050 + ... + 43740.

It is an arithmetic number, because the mean of its divisors is an integer number (1644192).

Almost surely, 2^29985945 is an apocalyptic number.

It is an amenable number.

29985945 is a deficient number, since it is larger than the sum of its proper divisors (22628199).

29985945 is a wasteful number, since it uses less digits than its factorization.

29985945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973.

The product of its digits is 1166400, while the sum is 51.

The square root of 29985945 is about 5475.9423846494. The cubic root of 29985945 is about 310.6747184012.

The spelling of 29985945 in words is "twenty-nine million, nine hundred eighty-five thousand, nine hundred forty-five".