29288427 has 16 divisors (see below), whose sum is σ = 45542400. Its totient is φ = 16735656.

The previous prime is 29288419. The next prime is 29288431. The reversal of 29288427 is 72488292.

It is not a de Polignac number, because 29288427 - 2³ = 29288419 is a prime.

It is a super-2 number, since 2×29288427² = 1715623912268658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29288477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13203 + ... + 15260.

It is an arithmetic number, because the mean of its divisors is an integer number (2846400).

Almost surely, 2^29288427 is an apocalyptic number.

29288427 is a deficient number, since it is larger than the sum of its proper divisors (16253973).

29288427 is an equidigital number, since it uses as much as digits as its factorization.

29288427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28487 (or 28473 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 29288427 is about 5411.8783245746. The cubic root of 29288427 is about 308.2468750690.

The spelling of 29288427 in words is "twenty-nine million, two hundred eighty-eight thousand, four hundred twenty-seven".