30147680 has 96 divisors (see below), whose sum is σ = 76930560. Its totient is φ = 11128320.

The previous prime is 30147679. The next prime is 30147701. The reversal of 30147680 is 8674103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142775 + ... + 142985.

It is an arithmetic number, because the mean of its divisors is an integer number (801360).

Almost surely, 2^30147680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30147680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38465280).

30147680 is an abundant number, since it is smaller than the sum of its proper divisors (46782880).

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

30147680 is a wasteful number, since it uses less digits than its factorization.

30147680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 30147680 is about 5490.6903026851. The cubic root of 30147680 is about 311.2322785779.

The spelling of 30147680 in words is "thirty million, one hundred forty-seven thousand, six hundred eighty".