20100424400 has 60 divisors (see below), whose sum is σ = 55190030112. Its totient is φ = 6891573120.

The previous prime is 20100424363. The next prime is 20100424427. The reversal of 20100424400 is 442400102.

It is a super-2 number, since 2×20100424400² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 3586562 + ... + 3592161.

Almost surely, 2^20100424400 is an apocalyptic number.

20100424400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100424400 is an abundant number, since it is smaller than the sum of its proper divisors (35089605712).

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

20100424400 is a wasteful number, since it uses less digits than its factorization.

20100424400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178748 (or 7178737 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20100424400 its reverse (442400102), we get a palindrome (20542824502).

The spelling of 20100424400 in words is "twenty billion, one hundred million, four hundred twenty-four thousand, four hundred".