29830820 has 24 divisors (see below), whose sum is σ = 64103424. Its totient is φ = 11654496.

The previous prime is 29830811. The next prime is 29830837. The reversal of 29830820 is 2803892.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16484 + ... + 18203.

It is an arithmetic number, because the mean of its divisors is an integer number (2670976).

Almost surely, 2^29830820 is an apocalyptic number.

29830820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29830820 is an abundant number, since it is smaller than the sum of its proper divisors (34272604).

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

29830820 is a wasteful number, since it uses less digits than its factorization.

29830820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34739 (or 34737 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 29830820 is about 5461.7597896649. The cubic root of 29830820 is about 310.1380585204.

The spelling of 29830820 in words is "twenty-nine million, eight hundred thirty thousand, eight hundred twenty".