21400301304 has 64 divisors (see below), whose sum is σ = 59465184000. Its totient is φ = 7131045600.

The previous prime is 21400301297. The next prime is 21400301347. The reversal of 21400301304 is 40310300412.

21400301304 is a `hidden beast` number, since 21 + 40 + 0 + 301 + 304 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701979 + ... + 731829.

It is an arithmetic number, because the mean of its divisors is an integer number (929143500).

Almost surely, 2^21400301304 is an apocalyptic number.

21400301304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21400301304 is an abundant number, since it is smaller than the sum of its proper divisors (38064882696).

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

21400301304 is a wasteful number, since it uses less digits than its factorization.

21400301304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33185 (or 33175 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21400301304 its reverse (40310300412), we get a palindrome (61710601716).

The spelling of 21400301304 in words is "twenty-one billion, four hundred million, three hundred one thousand, three hundred four".