12471988 has 6 divisors (see below), whose sum is σ = 21825986. Its totient is φ = 6235992.

The previous prime is 12471973. The next prime is 12472039. The reversal of 12471988 is 88917421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8892324 + 3579664 = 2982^2 + 1892^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12471988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558995 + ... + 1559002.

Almost surely, 2^12471988 is an apocalyptic number.

It is an amenable number.

12471988 is a deficient number, since it is larger than the sum of its proper divisors (9353998).

12471988 is a wasteful number, since it uses less digits than its factorization.

12471988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118001 (or 3117999 counting only the distinct ones).

The product of its digits is 32256, while the sum is 40.

The square root of 12471988 is about 3531.5701890236. The cubic root of 12471988 is about 231.9059517728.

The spelling of 12471988 in words is "twelve million, four hundred seventy-one thousand, nine hundred eighty-eight".