29285257 has 8 divisors (see below), whose sum is σ = 29687112. Its totient is φ = 28886400.

The previous prime is 29285227. The next prime is 29285261. The reversal of 29285257 is 75258292.

It can be written as a sum of positive squares in 4 ways, for example, as 3316041 + 25969216 = 1821^2 + 5096^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29285257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29285227) 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, 24207 + ... + 25387.

It is an arithmetic number, because the mean of its divisors is an integer number (3710889).

Almost surely, 2^29285257 is an apocalyptic number.

It is an amenable number.

29285257 is a deficient number, since it is larger than the sum of its proper divisors (401855).

29285257 is a wasteful number, since it uses less digits than its factorization.

29285257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its digits is 100800, while the sum is 40.

The square root of 29285257 is about 5411.5854423634. The cubic root of 29285257 is about 308.2357537497.

The spelling of 29285257 in words is "twenty-nine million, two hundred eighty-five thousand, two hundred fifty-seven".