20102434 has 32 divisors (see below), whose sum is σ = 33929280. Its totient is φ = 8856000.

The previous prime is 20102431. The next prime is 20102441. The reversal of 20102434 is 43420102.

It is not an unprimeable number, because it can be changed into a prime (20102431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184372 + ... + 184480.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^20102434 is an apocalyptic number.

20102434 is a deficient number, since it is larger than the sum of its proper divisors (13826846).

20102434 is a wasteful number, since it uses less digits than its factorization.

20102434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20102434 is about 4483.5737977645. The cubic root of 20102434 is about 271.9043871700.

Adding to 20102434 its reverse (43420102), we get a palindrome (63522536).

It can be divided in two parts, 2010 and 2434, that added together give a palindrome (4444).

The spelling of 20102434 in words is "twenty million, one hundred two thousand, four hundred thirty-four".