29312985 has 16 divisors (see below), whose sum is σ = 50508864. Its totient is φ = 14430912.

The previous prime is 29312977. The next prime is 29313013. The reversal of 29312985 is 58921392.

It is not a de Polignac number, because 29312985 - 2³ = 29312977 is a prime.

It is a super-2 number, since 2×29312985² = 1718502179220450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74967 + ... + 75356.

It is an arithmetic number, because the mean of its divisors is an integer number (3156804).

Almost surely, 2^29312985 is an apocalyptic number.

It is an amenable number.

29312985 is a deficient number, since it is larger than the sum of its proper divisors (21195879).

29312985 is a wasteful number, since it uses less digits than its factorization.

29312985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150344.

The product of its digits is 38880, while the sum is 39.

The square root of 29312985 is about 5414.1467471800. The cubic root of 29312985 is about 308.3330047882. Note that the first 3 decimals are identical.

The spelling of 29312985 in words is "twenty-nine million, three hundred twelve thousand, nine hundred eighty-five".