1288322 has 16 divisors (see below), whose sum is σ = 2305152. Its totient is φ = 528000.

The previous prime is 1288307. The next prime is 1288337. The reversal of 1288322 is 2238821.

It is an interprime number because it is at equal distance from previous prime (1288307) and next prime (1288337).

It is a junction number, because it is equal to n+sod(n) for n = 1288291 and 1288300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679 + ... + 2322.

It is an arithmetic number, because the mean of its divisors is an integer number (144072).

2^1288322 is an apocalyptic number.

1288322 is a deficient number, since it is larger than the sum of its proper divisors (1016830).

1288322 is a wasteful number, since it uses less digits than its factorization.

1288322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033.

The product of its digits is 1536, while the sum is 26.

The square root of 1288322 is about 1135.0427304732. The cubic root of 1288322 is about 108.8115026225.

It can be divided in two parts, 1288 and 322, that multiplied together give a square (414736 = 644²).

The spelling of 1288322 in words is "one million, two hundred eighty-eight thousand, three hundred twenty-two".