29980547 has 4 divisors (see below), whose sum is σ = 30009216. Its totient is φ = 29951880.

The previous prime is 29980543. The next prime is 29980583. The reversal of 29980547 is 74508992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29980547 - 2² = 29980543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29980498 and 29980507.

It is not an unprimeable number, because it can be changed into a prime (29980543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12704 + ... + 14877.

It is an arithmetic number, because the mean of its divisors is an integer number (7502304).

Almost surely, 2^29980547 is an apocalyptic number.

29980547 is a deficient number, since it is larger than the sum of its proper divisors (28669).

29980547 is a wasteful number, since it uses less digits than its factorization.

29980547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28668.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 29980547 is about 5475.4494792665. The cubic root of 29980547 is about 310.6560749693.

The spelling of 29980547 in words is "twenty-nine million, nine hundred eighty thousand, five hundred forty-seven".