1288470 has 32 divisors (see below), whose sum is σ = 3201120. Its totient is φ = 331520.

The previous prime is 1288439. The next prime is 1288487. The reversal of 1288470 is 748821.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130 + ... + 1610.

It is an arithmetic number, because the mean of its divisors is an integer number (100035).

2^1288470 is an apocalyptic number.

1288470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1288470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600560).

1288470 is an abundant number, since it is smaller than the sum of its proper divisors (1912650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1288470 is a wasteful number, since it uses less digits than its factorization.

1288470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 1288470 is about 1135.1079243843. The cubic root of 1288470 is about 108.8156691497.

The spelling of 1288470 in words is "one million, two hundred eighty-eight thousand, four hundred seventy".