20100234 has 64 divisors (see below), whose sum is σ = 50641920. Its totient is φ = 5166720.

The previous prime is 20100217. The next prime is 20100251. The reversal of 20100234 is 43200102.

It is an interprime number because it is at equal distance from previous prime (20100217) and next prime (20100251).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64062 + ... + 64374.

It is an arithmetic number, because the mean of its divisors is an integer number (791280).

Almost surely, 2^20100234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25320960).

20100234 is an abundant number, since it is smaller than the sum of its proper divisors (30541686).

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

20100234 is a wasteful number, since it uses less digits than its factorization.

20100234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20100234 is about 4483.3284510506. The cubic root of 20100234 is about 271.8944677829.

Adding to 20100234 its reverse (43200102), we get a palindrome (63300336).

The spelling of 20100234 in words is "twenty million, one hundred thousand, two hundred thirty-four".