20404240430304 has 48 divisors (see below), whose sum is σ = 53594419994640. Its totient is φ = 6797186319360.

The previous prime is 20404240430281. The next prime is 20404240430339. The reversal of 20404240430304 is 40303404240402.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×20404240430304³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65894067 + ... + 66202994.

It is an arithmetic number, because the mean of its divisors is an integer number (1116550416555).

Almost surely, 2^{20404240430304} is an apocalyptic number.

20404240430304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20404240430304 is an abundant number, since it is smaller than the sum of its proper divisors (33190179564336).

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

20404240430304 is a wasteful number, since it uses less digits than its factorization.

20404240430304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132098683 (or 132098675 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 20404240430304 its reverse (40303404240402), we get a palindrome (60707644670706).

The spelling of 20404240430304 in words is "twenty trillion, four hundred four billion, two hundred forty million, four hundred thirty thousand, three hundred four".