29242257 has 8 divisors (see below), whose sum is σ = 42534240. Its totient is φ = 17722560.

The previous prime is 29242249. The next prime is 29242259. The reversal of 29242257 is 75224292.

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

It is not a de Polignac number, because 29242257 - 2³ = 29242249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 886129 = 29242257 / (2 + 9 + 2 + 4 + 2 + 2 + 5 + 7).

It is not an unprimeable number, because it can be changed into a prime (29242259) 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, 443032 + ... + 443097.

It is an arithmetic number, because the mean of its divisors is an integer number (5316780).

Almost surely, 2^29242257 is an apocalyptic number.

It is an amenable number.

29242257 is a deficient number, since it is larger than the sum of its proper divisors (13291983).

29242257 is a wasteful number, since it uses less digits than its factorization.

29242257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886143.

The product of its digits is 20160, while the sum is 33.

The square root of 29242257 is about 5407.6110252125. The cubic root of 29242257 is about 308.0848173952.

The spelling of 29242257 in words is "twenty-nine million, two hundred forty-two thousand, two hundred fifty-seven".