20413020400 has 60 divisors (see below), whose sum is σ = 49258545912. Its totient is φ = 8129201920.

The previous prime is 20413020371. The next prime is 20413020409. The reversal of 20413020400 is 402031402.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413020409) 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 11 ways as a sum of consecutive naturals, for example, 21607 + ... + 203206.

Almost surely, 2^20413020400 is an apocalyptic number.

20413020400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413020400 is an abundant number, since it is smaller than the sum of its proper divisors (28845525512).

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

20413020400 is a wasteful number, since it uses less digits than its factorization.

20413020400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225058 (or 225047 counting only the distinct ones).

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

Adding to 20413020400 its reverse (402031402), we get a palindrome (20815051802).

The spelling of 20413020400 in words is "twenty billion, four hundred thirteen million, twenty thousand, four hundred".