30724742 has 8 divisors (see below), whose sum is σ = 46132632. Its totient is φ = 15347200.

The previous prime is 30724741. The next prime is 30724769. The reversal of 30724742 is 24742703.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30724741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4859 + ... + 9222.

It is an arithmetic number, because the mean of its divisors is an integer number (5766579).

Almost surely, 2^30724742 is an apocalyptic number.

30724742 is a deficient number, since it is larger than the sum of its proper divisors (15407890).

30724742 is a wasteful number, since it uses less digits than its factorization.

30724742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15174.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 30724742 is about 5542.9903481785. The cubic root of 30724742 is about 313.2055253102.

The spelling of 30724742 in words is "thirty million, seven hundred twenty-four thousand, seven hundred forty-two".