29980188 has 72 divisors (see below), whose sum is σ = 87127040. Its totient is φ = 8514720.

The previous prime is 29980187. The next prime is 29980189. The reversal of 29980188 is 88108992.

It is an interprime number because it is at equal distance from previous prime (29980187) and next prime (29980189).

It is a super-3 number, since 3×29980188³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29980183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68073 + ... + 68511.

Almost surely, 2^29980188 is an apocalyptic number.

29980188 is a gapful number since it is divisible by the number (28) 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 29980188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43563520).

29980188 is an abundant number, since it is smaller than the sum of its proper divisors (57146852).

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

29980188 is a wasteful number, since it uses less digits than its factorization.

29980188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 29980188 is about 5475.4166964716. The cubic root of 29980188 is about 310.6548349877.

The spelling of 29980188 in words is "twenty-nine million, nine hundred eighty thousand, one hundred eighty-eight".