29995220 has 48 divisors (see below), whose sum is σ = 66261888. Its totient is φ = 11383680.

The previous prime is 29995219. The next prime is 29995223. The reversal of 29995220 is 2259992.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29995223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90455 + ... + 90785.

It is an arithmetic number, because the mean of its divisors is an integer number (1380456).

Almost surely, 2^29995220 is an apocalyptic number.

29995220 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 29995220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33130944).

29995220 is an abundant number, since it is smaller than the sum of its proper divisors (36266668).

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

29995220 is a wasteful number, since it uses less digits than its factorization.

29995220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 29995220 is about 5476.7892053648. The cubic root of 29995220 is about 310.7067468617.

The spelling of 29995220 in words is "twenty-nine million, nine hundred ninety-five thousand, two hundred twenty".