30747672 has 48 divisors (see below), whose sum is σ = 83538000. Its totient is φ = 10216896.

The previous prime is 30747671. The next prime is 30747683. The reversal of 30747672 is 27674703.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30747671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36229 + ... + 37067.

It is an arithmetic number, because the mean of its divisors is an integer number (1740375).

Almost surely, 2^30747672 is an apocalyptic number.

It is an amenable number.

30747672 is an abundant number, since it is smaller than the sum of its proper divisors (52790328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30747672 is a wasteful number, since it uses less digits than its factorization.

30747672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 30747672 is about 5545.0583405407. The cubic root of 30747672 is about 313.2834214548.

The spelling of 30747672 in words is "thirty million, seven hundred forty-seven thousand, six hundred seventy-two".