29720481 has 16 divisors (see below), whose sum is σ = 46032768. Its totient is φ = 16704000.

The previous prime is 29720477. The next prime is 29720507. The reversal of 29720481 is 18402792.

It is a happy number.

It is not a de Polignac number, because 29720481 - 2² = 29720477 is a prime.

It is a super-2 number, since 2×29720481² = 1766613981742722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29720401) 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, 10320 + ... + 12881.

It is an arithmetic number, because the mean of its divisors is an integer number (2877048).

Almost surely, 2^29720481 is an apocalyptic number.

29720481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

29720481 is a deficient number, since it is larger than the sum of its proper divisors (16312287).

29720481 is a wasteful number, since it uses less digits than its factorization.

29720481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23272.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 29720481 is about 5451.6493834435. The cubic root of 29720481 is about 309.7552038997.

The spelling of 29720481 in words is "twenty-nine million, seven hundred twenty thousand, four hundred eighty-one".