29117940 has 48 divisors (see below), whose sum is σ = 86329152. Its totient is φ = 7307776.

The previous prime is 29117939. The next prime is 29117969. The reversal of 29117940 is 4971192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13254 + ... + 15293.

It is an arithmetic number, because the mean of its divisors is an integer number (1798524).

Almost surely, 2^29117940 is an apocalyptic number.

29117940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29117940 is an abundant number, since it is smaller than the sum of its proper divisors (57211212).

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

29117940 is a wasteful number, since it uses less digits than its factorization.

29117940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28576 (or 28574 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 29117940 is about 5396.1041502180. The cubic root of 29117940 is about 307.6476123861.

The spelling of 29117940 in words is "twenty-nine million, one hundred seventeen thousand, nine hundred forty".