29981814 has 16 divisors (see below), whose sum is σ = 60188160. Its totient is φ = 9956520.

The previous prime is 29981813. The next prime is 29981821. The reversal of 29981814 is 41818992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29981813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7594 + ... + 10845.

It is an arithmetic number, because the mean of its divisors is an integer number (3761760).

Almost surely, 2^29981814 is an apocalyptic number.

29981814 is an abundant number, since it is smaller than the sum of its proper divisors (30206346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29981814 is a wasteful number, since it uses less digits than its factorization.

29981814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18715.

The product of its digits is 41472, while the sum is 42.

The square root of 29981814 is about 5475.5651763083. The cubic root of 29981814 is about 310.6604510925.

The spelling of 29981814 in words is "twenty-nine million, nine hundred eighty-one thousand, eight hundred fourteen".