1288497 has 8 divisors (see below), whose sum is σ = 1963456. Its totient is φ = 736272.

The previous prime is 1288487. The next prime is 1288513. The reversal of 1288497 is 7948821.

1288497 = 259² + 260² + ... + 276².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1288497 - 2¹⁴ = 1272113 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30658 + ... + 30699.

It is an arithmetic number, because the mean of its divisors is an integer number (245432).

2^1288497 is an apocalyptic number.

It is an amenable number.

1288497 is a deficient number, since it is larger than the sum of its proper divisors (674959).

1288497 is an equidigital number, since it uses as much as digits as its factorization.

1288497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61367.

The product of its digits is 32256, while the sum is 39.

The square root of 1288497 is about 1135.1198174642. The cubic root of 1288497 is about 108.8164292250.

The spelling of 1288497 in words is "one million, two hundred eighty-eight thousand, four hundred ninety-seven".