30885740 has 24 divisors (see below), whose sum is σ = 64964592. Its totient is φ = 12334400.

The previous prime is 30885671. The next prime is 30885749. The reversal of 30885740 is 4758803.

It is a self number, because there is not a number n which added to its sum of digits gives 30885740.

It is not an unprimeable number, because it can be changed into a prime (30885749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23090 + ... + 24390.

It is an arithmetic number, because the mean of its divisors is an integer number (2706858).

Almost surely, 2^30885740 is an apocalyptic number.

It is an amenable number.

30885740 is an abundant number, since it is smaller than the sum of its proper divisors (34078852).

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

30885740 is a wasteful number, since it uses less digits than its factorization.

30885740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497 (or 2495 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 30885740 is about 5557.4940395829. The cubic root of 30885740 is about 313.7516393834.

The spelling of 30885740 in words is "thirty million, eight hundred eighty-five thousand, seven hundred forty".