1288972 has 6 divisors (see below), whose sum is σ = 2255708. Its totient is φ = 644484.

The previous prime is 1288967. The next prime is 1288981. The reversal of 1288972 is 2798821.

It is a super-2 number, since 2×1288972² = 3322897633568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161118 + ... + 161125.

2^1288972 is an apocalyptic number.

It is an amenable number.

1288972 is a deficient number, since it is larger than the sum of its proper divisors (966736).

1288972 is a wasteful number, since it uses less digits than its factorization.

1288972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322247 (or 322245 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 1288972 is about 1135.3290271987. The cubic root of 1288972 is about 108.8297991833.

The spelling of 1288972 in words is "one million, two hundred eighty-eight thousand, nine hundred seventy-two".