30123680 has 24 divisors (see below), whose sum is σ = 71167572. Its totient is φ = 12049408.

The previous prime is 30123679. The next prime is 30123701. The reversal of 30123680 is 8632103.

It can be written as a sum of positive squares in 2 ways, for example, as 28174864 + 1948816 = 5308^2 + 1396^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93977 + ... + 94296.

Almost surely, 2^30123680 is an apocalyptic number.

It is an amenable number.

30123680 is an abundant number, since it is smaller than the sum of its proper divisors (41043892).

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

30123680 is a wasteful number, since it uses less digits than its factorization.

30123680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188288 (or 188280 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30123680 is about 5488.5043500028. The cubic root of 30123680 is about 311.1496679349.

Adding to 30123680 its reverse (8632103), we get a palindrome (38755783).

It can be divided in two parts, 30123 and 680, that added together give a palindrome (30803).

The spelling of 30123680 in words is "thirty million, one hundred twenty-three thousand, six hundred eighty".