20101734 has 48 divisors (see below), whose sum is σ = 46753200. Its totient is φ = 6222528.

The previous prime is 20101721. The next prime is 20101771. The reversal of 20101734 is 43710102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17572 + ... + 18680.

It is an arithmetic number, because the mean of its divisors is an integer number (974025).

Almost surely, 2^20101734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20101734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23376600).

20101734 is an abundant number, since it is smaller than the sum of its proper divisors (26651466).

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

20101734 is a wasteful number, since it uses less digits than its factorization.

20101734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20101734 is about 4483.4957343573. The cubic root of 20101734 is about 271.9012310799.

Adding to 20101734 its reverse (43710102), we get a palindrome (63811836).

The spelling of 20101734 in words is "twenty million, one hundred one thousand, seven hundred thirty-four".