29288220 has 48 divisors (see below), whose sum is σ = 88317600. Its totient is φ = 7209216.

The previous prime is 29288219. The next prime is 29288239. The reversal of 29288220 is 2288292.

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, 17995 + ... + 19554.

It is an arithmetic number, because the mean of its divisors is an integer number (1839950).

Almost surely, 2^29288220 is an apocalyptic number.

29288220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29288220 is an abundant number, since it is smaller than the sum of its proper divisors (59029380).

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

29288220 is a wasteful number, since it uses less digits than its factorization.

29288220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37574 (or 37572 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 29288220 is about 5411.8591999423. The cubic root of 29288220 is about 308.2461488749.

The spelling of 29288220 in words is "twenty-nine million, two hundred eighty-eight thousand, two hundred twenty".