1071988 has 12 divisors (see below), whose sum is σ = 1884960. Its totient is φ = 533432.

The previous prime is 1071979. The next prime is 1071991. The reversal of 1071988 is 8891701.

It is a super-2 number, since 2×1071988² = 2298316544288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (157080).

2^1071988 is an apocalyptic number.

It is an amenable number.

1071988 is a deficient number, since it is larger than the sum of its proper divisors (812972).

1071988 is a wasteful number, since it uses less digits than its factorization.

1071988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 1071988 is about 1035.3685334218. The cubic root of 1071988 is about 102.3442170540.

The spelling of 1071988 in words is "one million, seventy-one thousand, nine hundred eighty-eight".