12151604 has 6 divisors (see below), whose sum is σ = 21265314. Its totient is φ = 6075800.

The previous prime is 12151603. The next prime is 12151637. The reversal of 12151604 is 40615121.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 996004 = 3340^2 + 998^2 .

It is a super-2 number, since 2×12151604² = 295322959545632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1518947 + ... + 1518954.

It is an arithmetic number, because the mean of its divisors is an integer number (3544219).

Almost surely, 2^12151604 is an apocalyptic number.

It is an amenable number.

12151604 is a deficient number, since it is larger than the sum of its proper divisors (9113710).

12151604 is a wasteful number, since it uses less digits than its factorization.

12151604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037905 (or 3037903 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12151604 is about 3485.9150878930. The cubic root of 12151604 is about 229.9029458188.

Adding to 12151604 its reverse (40615121), we get a palindrome (52766725).

The spelling of 12151604 in words is "twelve million, one hundred fifty-one thousand, six hundred four".