20247490100 has 18 divisors (see below), whose sum is σ = 43937053734. Its totient is φ = 8098996000.

The previous prime is 20247490091. The next prime is 20247490103. The reversal of 20247490100 is 109474202.

It can be written as a sum of positive squares in 3 ways, for example, as 3987669904 + 16259820196 = 63148^2 + 127514^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20247490103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101237351 + ... + 101237550.

Almost surely, 2^20247490100 is an apocalyptic number.

20247490100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20247490100 is an abundant number, since it is smaller than the sum of its proper divisors (23689563634).

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

20247490100 is a wasteful number, since it uses less digits than its factorization.

20247490100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202474915 (or 202474908 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 20247490100 in words is "twenty billion, two hundred forty-seven million, four hundred ninety thousand, one hundred".