29215980 has 72 divisors (see below), whose sum is σ = 92488032. Its totient is φ = 7451136.

The previous prime is 29215961. The next prime is 29215997. The reversal of 29215980 is 8951292.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 612 + ... + 7668.

It is an arithmetic number, because the mean of its divisors is an integer number (1284556).

Almost surely, 2^29215980 is an apocalyptic number.

29215980 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 29215980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46244016).

29215980 is an abundant number, since it is smaller than the sum of its proper divisors (63272052).

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

29215980 is a wasteful number, since it uses less digits than its factorization.

29215980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095 (or 7090 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 29215980 is about 5405.1808480383. The cubic root of 29215980 is about 307.9925083915.

The spelling of 29215980 in words is "twenty-nine million, two hundred fifteen thousand, nine hundred eighty".