29730820 has 48 divisors (see below), whose sum is σ = 75116160. Its totient is φ = 9656064.

The previous prime is 29730809. The next prime is 29730823. The reversal of 29730820 is 2803792.

It is not an unprimeable number, because it can be changed into a prime (29730823) 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, 2929 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (1564920).

Almost surely, 2^29730820 is an apocalyptic number.

29730820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29730820 is an abundant number, since it is smaller than the sum of its proper divisors (45385340).

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

29730820 is a wasteful number, since it uses less digits than its factorization.

29730820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11212 (or 11210 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 29730820 is about 5452.5975461242. The cubic root of 29730820 is about 309.7911183898.

The spelling of 29730820 in words is "twenty-nine million, seven hundred thirty thousand, eight hundred twenty".