29085820 has 36 divisors (see below), whose sum is σ = 62513640. Its totient is φ = 11364288.

The previous prime is 29085779. The next prime is 29085829. The reversal of 29085820 is 2858092.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29085829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185182 + ... + 185338.

It is an arithmetic number, because the mean of its divisors is an integer number (1736490).

Almost surely, 2^29085820 is an apocalyptic number.

29085820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29085820 is an abundant number, since it is smaller than the sum of its proper divisors (33427820).

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

29085820 is a wasteful number, since it uses less digits than its factorization.

29085820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 29085820 is about 5393.1271077177. The cubic root of 29085820 is about 307.5344487372.

The spelling of 29085820 in words is "twenty-nine million, eighty-five thousand, eight hundred twenty".