1285472 has 36 divisors (see below), whose sum is σ = 2707740. Its totient is φ = 600576.

The previous prime is 1285469. The next prime is 1285481. The reversal of 1285472 is 2745821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9179 + ... + 9317.

It is an arithmetic number, because the mean of its divisors is an integer number (75215).

2^1285472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353870).

1285472 is an abundant number, since it is smaller than the sum of its proper divisors (1422268).

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

1285472 is a wasteful number, since it uses less digits than its factorization.

1285472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 158 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 1285472 is about 1133.7865760362. The cubic root of 1285472 is about 108.7312065115.

The spelling of 1285472 in words is "one million, two hundred eighty-five thousand, four hundred seventy-two".