30713560 has 96 divisors (see below), whose sum is σ = 77215680. Its totient is φ = 10951680.

The previous prime is 30713549. The next prime is 30713563. The reversal of 30713560 is 6531703.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30713563) 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 23 ways as a sum of consecutive naturals, for example, 653457 + ... + 653503.

It is an arithmetic number, because the mean of its divisors is an integer number (804330).

Almost surely, 2^30713560 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 30713560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38607840).

30713560 is an abundant number, since it is smaller than the sum of its proper divisors (46502120).

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

30713560 is a wasteful number, since it uses less digits than its factorization.

30713560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 30713560 is about 5541.9815950615. The cubic root of 30713560 is about 313.1675245664.

The spelling of 30713560 in words is "thirty million, seven hundred thirteen thousand, five hundred sixty".