21824304734 has 4 divisors (see below), whose sum is σ = 32736457104. Its totient is φ = 10912152366.

The previous prime is 21824304731. The next prime is 21824304743. The reversal of 21824304734 is 43740342812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21824304731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5456076182 + ... + 5456076185.

It is an arithmetic number, because the mean of its divisors is an integer number (8184114276).

Almost surely, 2^21824304734 is an apocalyptic number.

21824304734 is a deficient number, since it is larger than the sum of its proper divisors (10912152370).

21824304734 is a wasteful number, since it uses less digits than its factorization.

21824304734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10912152369.

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 21824304734 in words is "twenty-one billion, eight hundred twenty-four million, three hundred four thousand, seven hundred thirty-four".