29690220 has 96 divisors (see below), whose sum is σ = 95735808. Its totient is φ = 6734592.

The previous prime is 29690209. The next prime is 29690231. The reversal of 29690220 is 2209692.

It is an interprime number because it is at equal distance from previous prime (29690209) and next prime (29690231).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 93502 + ... + 93818.

It is an arithmetic number, because the mean of its divisors is an integer number (997248).

Almost surely, 2^29690220 is an apocalyptic number.

29690220 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 29690220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47867904).

29690220 is an abundant number, since it is smaller than the sum of its proper divisors (66045588).

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

29690220 is a wasteful number, since it uses less digits than its factorization.

29690220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 29690220 is about 5448.8732780273. The cubic root of 29690220 is about 309.6500386508.

The spelling of 29690220 in words is "twenty-nine million, six hundred ninety thousand, two hundred twenty".