29997828 has 36 divisors (see below), whose sum is σ = 86661120. Its totient is φ = 8570736.

The previous prime is 29997791. The next prime is 29997829. The reversal of 29997828 is 82879992.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (29997829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59268 + ... + 59771.

Almost surely, 2^29997828 is an apocalyptic number.

29997828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29997828 is an abundant number, since it is smaller than the sum of its proper divisors (56663292).

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

29997828 is a wasteful number, since it uses less digits than its factorization.

29997828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119056 (or 119051 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 29997828 is about 5477.0272958969. The cubic root of 29997828 is about 310.7157516266.

The spelling of 29997828 in words is "twenty-nine million, nine hundred ninety-seven thousand, eight hundred twenty-eight".