1971488 has 12 divisors (see below), whose sum is σ = 3881430. Its totient is φ = 985728.

The previous prime is 1971481. The next prime is 1971503. The reversal of 1971488 is 8841791.

It can be written as a sum of positive squares in only one way, i.e., 1926544 + 44944 = 1388^2 + 212^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1971481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30773 + ... + 30836.

2^1971488 is an apocalyptic number.

It is an amenable number.

1971488 is a deficient number, since it is larger than the sum of its proper divisors (1909942).

1971488 is an equidigital number, since it uses as much as digits as its factorization.

1971488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61619 (or 61611 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 1971488 is about 1404.0968627556. The cubic root of 1971488 is about 125.3905226658.

The spelling of 1971488 in words is "one million, nine hundred seventy-one thousand, four hundred eighty-eight".