30724397 has 8 divisors (see below), whose sum is σ = 33594912. Its totient is φ = 27866800.

The previous prime is 30724339. The next prime is 30724399. The reversal of 30724397 is 79342703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30724397 - 2⁶ = 30724333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30724399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147 + ... + 8127.

It is an arithmetic number, because the mean of its divisors is an integer number (4199364).

Almost surely, 2^30724397 is an apocalyptic number.

It is an amenable number.

30724397 is a deficient number, since it is larger than the sum of its proper divisors (2870515).

30724397 is a wasteful number, since it uses less digits than its factorization.

30724397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6459.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 30724397 is about 5542.9592277050. The cubic root of 30724397 is about 313.2043530052.

It can be divided in two parts, 30 and 724397, that added together give a palindrome (724427).

The spelling of 30724397 in words is "thirty million, seven hundred twenty-four thousand, three hundred ninety-seven".