29489980 has 48 divisors (see below), whose sum is σ = 67413024. Its totient is φ = 10771200.

The previous prime is 29489963. The next prime is 29489987. The reversal of 29489980 is 8998492.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29489987) 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, 25699 + ... + 26821.

It is an arithmetic number, because the mean of its divisors is an integer number (1404438).

Almost surely, 2^29489980 is an apocalyptic number.

29489980 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 29489980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33706512).

29489980 is an abundant number, since it is smaller than the sum of its proper divisors (37923044).

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

29489980 is a wasteful number, since it uses less digits than its factorization.

29489980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 29489980 is about 5430.4677514925. The cubic root of 29489980 is about 308.9523426814.

The spelling of 29489980 in words is "twenty-nine million, four hundred eighty-nine thousand, nine hundred eighty".