17142885 has 24 divisors (see below), whose sum is σ = 31463640. Its totient is φ = 8604672.

The previous prime is 17142871. The next prime is 17142893. The reversal of 17142885 is 58824171.

It can be written as a sum of positive squares in 4 ways, for example, as 3944196 + 13198689 = 1986^2 + 3633^2 .

It is not a de Polignac number, because 17142885 - 2⁴ = 17142869 is a prime.

It is a super-2 number, since 2×17142885² = 587757012246450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10440 + ... + 11969.

It is an arithmetic number, because the mean of its divisors is an integer number (1310985).

Almost surely, 2^17142885 is an apocalyptic number.

17142885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17142885 is a deficient number, since it is larger than the sum of its proper divisors (14320755).

17142885 is a wasteful number, since it uses less digits than its factorization.

17142885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22437 (or 22434 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 17142885 is about 4140.3967201224. The cubic root of 17142885 is about 257.8465375446.

The spelling of 17142885 in words is "seventeen million, one hundred forty-two thousand, eight hundred eighty-five".