30889748 has 24 divisors (see below), whose sum is σ = 57457512. Its totient is φ = 14480384.

The previous prime is 30889741. The next prime is 30889753. The reversal of 30889748 is 84798803.

It can be written as a sum of positive squares in 4 ways, for example, as 5769604 + 25120144 = 2402^2 + 5012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30889741) 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, 20840 + ... + 22272.

It is an arithmetic number, because the mean of its divisors is an integer number (2394063).

Almost surely, 2^30889748 is an apocalyptic number.

It is an amenable number.

30889748 is a deficient number, since it is larger than the sum of its proper divisors (26567764).

30889748 is a wasteful number, since it uses less digits than its factorization.

30889748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 30889748 is about 5557.8546220642. The cubic root of 30889748 is about 313.7652105026.

The spelling of 30889748 in words is "thirty million, eight hundred eighty-nine thousand, seven hundred forty-eight".