20171292 has 24 divisors (see below), whose sum is σ = 47235216. Its totient is φ = 6699648.

The previous prime is 20171279. The next prime is 20171317. The reversal of 20171292 is 29217102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648 + ... + 6384.

It is an arithmetic number, because the mean of its divisors is an integer number (1968134).

Almost surely, 2^20171292 is an apocalyptic number.

It is an amenable number.

20171292 is an abundant number, since it is smaller than the sum of its proper divisors (27063924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20171292 is a wasteful number, since it uses less digits than its factorization.

20171292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 20171292 is about 4491.2461522388. The cubic root of 20171292 is about 272.2144898416.

Adding to 20171292 its reverse (29217102), we get a palindrome (49388394).

The spelling of 20171292 in words is "twenty million, one hundred seventy-one thousand, two hundred ninety-two".