29286220 has 24 divisors (see below), whose sum is σ = 64738800. Its totient is φ = 11097792.

The previous prime is 29286211. The next prime is 29286241. The reversal of 29286220 is 2268292.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38155 + ... + 38914.

It is an arithmetic number, because the mean of its divisors is an integer number (2697450).

Almost surely, 2^29286220 is an apocalyptic number.

29286220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29286220 is an abundant number, since it is smaller than the sum of its proper divisors (35452580).

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

29286220 is a wasteful number, since it uses less digits than its factorization.

29286220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77097 (or 77095 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 29286220 is about 5411.6744174054. The cubic root of 29286220 is about 308.2391323300.

The spelling of 29286220 in words is "twenty-nine million, two hundred eighty-six thousand, two hundred twenty".