30741856 has 48 divisors (see below), whose sum is σ = 63307440. Its totient is φ = 14676480.

The previous prime is 30741839. The next prime is 30741877. The reversal of 30741856 is 65814703.

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

It is a congruent number.

It is an unprimeable number.

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, 145591 + ... + 145801.

It is an arithmetic number, because the mean of its divisors is an integer number (1318905).

Almost surely, 2^30741856 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 30741856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31653720).

30741856 is an abundant number, since it is smaller than the sum of its proper divisors (32565584).

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

30741856 is a wasteful number, since it uses less digits than its factorization.

30741856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 30741856 is about 5544.5338848275. The cubic root of 30741856 is about 313.2636674251.

The spelling of 30741856 in words is "thirty million, seven hundred forty-one thousand, eight hundred fifty-six".