29887945 has 8 divisors (see below), whose sum is σ = 35904960. Its totient is φ = 23884080.

The previous prime is 29887901. The next prime is 29887961. The reversal of 29887945 is 54978892.

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

It is not a de Polignac number, because 29887945 - 2¹¹ = 29885897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29887892 and 29887901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2716 + ... + 8194.

It is an arithmetic number, because the mean of its divisors is an integer number (4488120).

Almost surely, 2^29887945 is an apocalyptic number.

It is an amenable number.

29887945 is a deficient number, since it is larger than the sum of its proper divisors (6017015).

29887945 is a wasteful number, since it uses less digits than its factorization.

29887945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575.

The product of its digits is 1451520, while the sum is 52.

The square root of 29887945 is about 5466.9868300555. The cubic root of 29887945 is about 310.3359002122.

The spelling of 29887945 in words is "twenty-nine million, eight hundred eighty-seven thousand, nine hundred forty-five".