20143734 has 16 divisors (see below), whose sum is σ = 43386672. Its totient is φ = 6198048.

The previous prime is 20143733. The next prime is 20143787. The reversal of 20143734 is 43734102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143733) 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, 129049 + ... + 129204.

It is an arithmetic number, because the mean of its divisors is an integer number (2711667).

Almost surely, 2^20143734 is an apocalyptic number.

20143734 is an abundant number, since it is smaller than the sum of its proper divisors (23242938).

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

20143734 is a wasteful number, since it uses less digits than its factorization.

20143734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258271.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20143734 is about 4488.1771355418. The cubic root of 20143734 is about 272.0904669518.

Adding to 20143734 its reverse (43734102), we get a palindrome (63877836).

The spelling of 20143734 in words is "twenty million, one hundred forty-three thousand, seven hundred thirty-four".