20146170 has 64 divisors (see below), whose sum is σ = 54069120. Its totient is φ = 4761600.

The previous prime is 20146169. The next prime is 20146171. The reversal of 20146170 is 7164102.

It is an interprime number because it is at equal distance from previous prime (20146169) and next prime (20146171).

It is not an unprimeable number, because it can be changed into a prime (20146171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12786 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (844830).

Almost surely, 2^20146170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20146170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27034560).

20146170 is an abundant number, since it is smaller than the sum of its proper divisors (33922950).

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

20146170 is a wasteful number, since it uses less digits than its factorization.

20146170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20146170 is about 4488.4485070011. The cubic root of 20146170 is about 272.1014345586.

The spelling of 20146170 in words is "twenty million, one hundred forty-six thousand, one hundred seventy".