30724849 has 9 divisors (see below), whose sum is σ = 32252619. Its totient is φ = 29267040.

The previous prime is 30724829. The next prime is 30724861. The reversal of 30724849 is 94842703.

It is a happy number.

The square root of 30724849 is 5543.

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

It can be written as a sum of positive squares in only one way, i.e., 23107249 + 7617600 = 4807^2 + 2760^2 .

It is not a de Polignac number, because 30724849 - 2⁷ = 30724721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30724819) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 127369 + ... + 127609.

Almost surely, 2^30724849 is an apocalyptic number.

30724849 is the 5543-rd square number.

30724849 is the 2772-nd centered octagonal number.

It is an amenable number.

30724849 is a deficient number, since it is larger than the sum of its proper divisors (1527770).

30724849 is an frugal number, since it uses more digits than its factorization.

30724849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The cubic root of 30724849 is about 313.2058888929.

It can be divided in two parts, 3072 and 4849, that added together give a square (7921 = 89²).

The spelling of 30724849 in words is "thirty million, seven hundred twenty-four thousand, eight hundred forty-nine".