1288624 has 20 divisors (see below), whose sum is σ = 2556136. Its totient is φ = 628992.

The previous prime is 1288613. The next prime is 1288643. The reversal of 1288624 is 4268821.

1288624 is nontrivially palindromic in base 7.

It is a plaindrome in base 14.

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, 249 + ... + 1624.

2^1288624 is an apocalyptic number.

It is an amenable number.

1288624 is a deficient number, since it is larger than the sum of its proper divisors (1267512).

1288624 is a wasteful number, since it uses less digits than its factorization.

1288624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 1918 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 1288624 is about 1135.1757573169. The cubic root of 1288624 is about 108.8200042514.

The spelling of 1288624 in words is "one million, two hundred eighty-eight thousand, six hundred twenty-four".