29720030 has 16 divisors (see below), whose sum is σ = 53660880. Its totient is φ = 11851392.

The previous prime is 29720023. The next prime is 29720057. The reversal of 29720030 is 3002792.

It is a junction number, because it is equal to n+sod(n) for n = 29719978 and 29720005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040 + ... + 7779.

It is an arithmetic number, because the mean of its divisors is an integer number (3353805).

Almost surely, 2^29720030 is an apocalyptic number.

29720030 is a deficient number, since it is larger than the sum of its proper divisors (23940850).

29720030 is a wasteful number, since it uses less digits than its factorization.

29720030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9163.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 29720030 is about 5451.6080196581. The cubic root of 29720030 is about 309.7536370756.

The spelling of 29720030 in words is "twenty-nine million, seven hundred twenty thousand, thirty".