29720673 has 12 divisors (see below), whose sum is σ = 42978000. Its totient is φ = 19791576.

The previous prime is 29720629. The next prime is 29720683. The reversal of 29720673 is 37602792.

It is not a de Polignac number, because 29720673 - 2⁶ = 29720609 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (29720683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12390 + ... + 14592.

It is an arithmetic number, because the mean of its divisors is an integer number (3581500).

Almost surely, 2^29720673 is an apocalyptic number.

It is an amenable number.

29720673 is a deficient number, since it is larger than the sum of its proper divisors (13257327).

29720673 is a wasteful number, since it uses less digits than its factorization.

29720673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708 (or 3705 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 29720673 is about 5451.6669927647. Note that the first 3 decimals coincide. The cubic root of 29720673 is about 309.7558709243.

The spelling of 29720673 in words is "twenty-nine million, seven hundred twenty thousand, six hundred seventy-three".