12390152 has 8 divisors (see below), whose sum is σ = 23231550. Its totient is φ = 6195072.

The previous prime is 12390151. The next prime is 12390197. The reversal of 12390152 is 25109321.

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 376996 = 3466^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390151) by changing a digit.

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 as a sum of consecutive naturals, namely, 774377 + ... + 774392.

Almost surely, 2^12390152 is an apocalyptic number.

It is an amenable number.

12390152 is a deficient number, since it is larger than the sum of its proper divisors (10841398).

12390152 is a wasteful number, since it uses less digits than its factorization.

12390152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548775 (or 1548771 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12390152 is about 3519.9647725510. The cubic root of 12390152 is about 231.3976148344.

Adding to 12390152 its reverse (25109321), we get a palindrome (37499473).

The spelling of 12390152 in words is "twelve million, three hundred ninety thousand, one hundred fifty-two".