21202430304 has 48 divisors (see below), whose sum is σ = 60716053440. Its totient is φ = 6424978560.

The previous prime is 21202430299. The next prime is 21202430317. The reversal of 21202430304 is 40303420212.

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

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, 10037974 + ... + 10040085.

It is an arithmetic number, because the mean of its divisors is an integer number (1264917780).

Almost surely, 2^21202430304 is an apocalyptic number.

21202430304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21202430304 is an abundant number, since it is smaller than the sum of its proper divisors (39513623136).

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

21202430304 is a wasteful number, since it uses less digits than its factorization.

21202430304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20078083 (or 20078075 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21202430304 its reverse (40303420212), we get a palindrome (61505850516).

The spelling of 21202430304 in words is "twenty-one billion, two hundred two million, four hundred thirty thousand, three hundred four".