29390220 has 72 divisors (see below), whose sum is σ = 90518064. Its totient is φ = 7717248.

The previous prime is 29390197. The next prime is 29390267. The reversal of 29390220 is 2209392.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10842 + ... + 13278.

Almost surely, 2^29390220 is an apocalyptic number.

29390220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29390220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45259032).

29390220 is an abundant number, since it is smaller than the sum of its proper divisors (61127844).

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

29390220 is a wasteful number, since it uses less digits than its factorization.

29390220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519 (or 2514 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 29390220 is about 5421.2747578406. The cubic root of 29390220 is about 308.6035699177.

The spelling of 29390220 in words is "twenty-nine million, three hundred ninety thousand, two hundred twenty".