12240388 has 6 divisors (see below), whose sum is σ = 21420686. Its totient is φ = 6120192.

The previous prime is 12240379. The next prime is 12240401. The reversal of 12240388 is 88304221.

It can be written as a sum of positive squares in only one way, i.e., 8248384 + 3992004 = 2872^2 + 1998^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1530045 + ... + 1530052.

Almost surely, 2^12240388 is an apocalyptic number.

It is an amenable number.

12240388 is a deficient number, since it is larger than the sum of its proper divisors (9180298).

12240388 is a wasteful number, since it uses less digits than its factorization.

12240388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060101 (or 3060099 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 12240388 is about 3498.6265876769. The cubic root of 12240388 is about 230.4615056105.

The spelling of 12240388 in words is "twelve million, two hundred forty thousand, three hundred eighty-eight".