29272281 has 8 divisors (see below), whose sum is σ = 40375680. Its totient is φ = 18841872.

The previous prime is 29272279. The next prime is 29272289. The reversal of 29272281 is 18227292.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29272281 - 2¹ = 29272279 is a prime.

It is a super-2 number, since 2×29272281² = 1713732869885922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29272289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168145 + ... + 168318.

It is an arithmetic number, because the mean of its divisors is an integer number (5046960).

Almost surely, 2^29272281 is an apocalyptic number.

It is an amenable number.

29272281 is a deficient number, since it is larger than the sum of its proper divisors (11103399).

29272281 is a wasteful number, since it uses less digits than its factorization.

29272281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336495.

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

The square root of 29272281 is about 5410.3864002491. The cubic root of 29272281 is about 308.1902216466.

The spelling of 29272281 in words is "twenty-nine million, two hundred seventy-two thousand, two hundred eighty-one".