24730729 has 3 divisors (see below), whose sum is σ = 24735703. Its totient is φ = 24725756.

The previous prime is 24730669. The next prime is 24730751. The reversal of 24730729 is 92703742.

The square root of 24730729 is 4973.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 16040025 + 8690704 = 4005^2 + 2948^2 .

It is a de Polignac number, because none of the positive numbers 2^k-24730729 is a prime.

It is a super-2 number, since 2×24730729² = 1223217913742882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24730694 and 24730703.

It is not an unprimeable number, because it can be changed into a prime (24700729) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2487 + ... + 7459.

Almost surely, 2^24730729 is an apocalyptic number.

24730729 is the 4973-rd square number.

24730729 is the 2487-th centered octagonal number.

It is an amenable number.

24730729 is a deficient number, since it is larger than the sum of its proper divisors (4974).

24730729 is an frugal number, since it uses more digits than its factorization.

24730729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946 (or 4973 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The cubic root of 24730729 is about 291.3481777729.

It can be divided in two parts, 247 and 30729, that added together give a square (30976 = 176²).

The spelling of 24730729 in words is "twenty-four million, seven hundred thirty thousand, seven hundred twenty-nine".