29081913 has 32 divisors (see below), whose sum is σ = 48691200. Its totient is φ = 15054336.

The previous prime is 29081909. The next prime is 29081957. The reversal of 29081913 is 31918092.

It is not a de Polignac number, because 29081913 - 2² = 29081909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29081903) 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, 7593 + ... + 10761.

It is an arithmetic number, because the mean of its divisors is an integer number (1521600).

Almost surely, 2^29081913 is an apocalyptic number.

29081913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

29081913 is a deficient number, since it is larger than the sum of its proper divisors (19609287).

29081913 is a wasteful number, since it uses less digits than its factorization.

29081913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 29081913 is about 5392.7648752750. The cubic root of 29081913 is about 307.5206780992.

The spelling of 29081913 in words is "twenty-nine million, eighty-one thousand, nine hundred thirteen".