29987398 has 16 divisors (see below), whose sum is σ = 51482880. Its totient is φ = 12832776.

The previous prime is 29987357. The next prime is 29987401. The reversal of 29987398 is 89378992.

It is a congruent number.

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, 12673 + ... + 14851.

It is an arithmetic number, because the mean of its divisors is an integer number (3217680).

Almost surely, 2^29987398 is an apocalyptic number.

29987398 is a deficient number, since it is larger than the sum of its proper divisors (21495482).

29987398 is a wasteful number, since it uses less digits than its factorization.

29987398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171.

The product of its digits is 1959552, while the sum is 55.

The square root of 29987398 is about 5476.0750542702. The cubic root of 29987398 is about 310.6797363418.

The spelling of 29987398 in words is "twenty-nine million, nine hundred eighty-seven thousand, three hundred ninety-eight".