1285792 has 24 divisors (see below), whose sum is σ = 2642976. Its totient is φ = 614592.

The previous prime is 1285789. The next prime is 1285793. The reversal of 1285792 is 2975821.

It is a super-2 number, since 2×1285792² = 3306522134528, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1285793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (110124).

2^1285792 is an apocalyptic number.

It is an amenable number.

1285792 is an abundant number, since it is smaller than the sum of its proper divisors (1357184).

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

1285792 is a wasteful number, since it uses less digits than its factorization.

1285792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1772 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 1285792 is about 1133.9276872887. The cubic root of 1285792 is about 108.7402281262.

The spelling of 1285792 in words is "one million, two hundred eighty-five thousand, seven hundred ninety-two".