1285376 has 18 divisors (see below), whose sum is σ = 2566242. Its totient is φ = 642560.

The previous prime is 1285351. The next prime is 1285381. The reversal of 1285376 is 6735821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 30976 = 1120^2 + 176^2 .

It is a super-2 number, since 2×1285376² = 3304382922752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2255 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (142569).

2^1285376 is an apocalyptic number.

1285376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1285376 is a deficient number, since it is larger than the sum of its proper divisors (1280866).

1285376 is an frugal number, since it uses more digits than its factorization.

It is an anagram of its base 9 representation: 1285376 = (2368175)₉.

1285376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037 (or 5023 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1285376 is about 1133.7442392356. The cubic root of 1285376 is about 108.7284997352.

It can be divided in two parts, 1285 and 376, that added together give a palindrome (1661).

The spelling of 1285376 in words is "one million, two hundred eighty-five thousand, three hundred seventy-six".