29820530 has 16 divisors (see below), whose sum is σ = 54986904. Its totient is φ = 11637120.

The previous prime is 29820523. The next prime is 29820541. The reversal of 29820530 is 3502892.

It can be written as a sum of positive squares in 4 ways, for example, as 23107249 + 6713281 = 4807^2 + 2591^2 .

It is a junction number, because it is equal to n+sod(n) for n = 29820493 and 29820502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35957 + ... + 36776.

Almost surely, 2^29820530 is an apocalyptic number.

29820530 is a deficient number, since it is larger than the sum of its proper divisors (25166374).

29820530 is a wasteful number, since it uses less digits than its factorization.

29820530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72781.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 29820530 is about 5460.8177043370. The cubic root of 29820530 is about 310.1023942014.

The spelling of 29820530 in words is "twenty-nine million, eight hundred twenty thousand, five hundred thirty".