30713536 has 56 divisors (see below), whose sum is σ = 70225920. Its totient is φ = 13055232.

The previous prime is 30713531. The next prime is 30713549. The reversal of 30713536 is 63531703.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (30713531) 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 7 ways as a sum of consecutive naturals, for example, 80001 + ... + 80383.

Almost surely, 2^30713536 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 30713536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35112960).

30713536 is an abundant number, since it is smaller than the sum of its proper divisors (39512384).

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

30713536 is a wasteful number, since it uses less digits than its factorization.

30713536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 30713536 is about 5541.9794297706. The cubic root of 30713536 is about 313.1674429953.

The spelling of 30713536 in words is "thirty million, seven hundred thirteen thousand, five hundred thirty-six".