20295291 has 8 divisors (see below), whose sum is σ = 27147024. Its totient is φ = 13486880.

The previous prime is 20295283. The next prime is 20295299. The reversal of 20295291 is 19259202.

It is an interprime number because it is at equal distance from previous prime (20295283) and next prime (20295299).

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

It is a cyclic number.

It is not a de Polignac number, because 20295291 - 2³ = 20295283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20295299) 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, 9720 + ... + 11621.

It is an arithmetic number, because the mean of its divisors is an integer number (3393378).

Almost surely, 2^20295291 is an apocalyptic number.

20295291 is a deficient number, since it is larger than the sum of its proper divisors (6851733).

20295291 is a wasteful number, since it uses less digits than its factorization.

20295291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21661.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20295291 is about 4505.0295226558. The cubic root of 20295291 is about 272.7711455379.

The spelling of 20295291 in words is "twenty million, two hundred ninety-five thousand, two hundred ninety-one".