1285672 has 8 divisors (see below), whose sum is σ = 2410650. Its totient is φ = 642832.

The previous prime is 1285649. The next prime is 1285679. The reversal of 1285672 is 2765821.

It can be written as a sum of positive squares in only one way, i.e., 1179396 + 106276 = 1086^2 + 326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1285679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80347 + ... + 80362.

2^1285672 is an apocalyptic number.

It is an amenable number.

1285672 is a deficient number, since it is larger than the sum of its proper divisors (1124978).

1285672 is a wasteful number, since it uses less digits than its factorization.

1285672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160715 (or 160711 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 1285672 is about 1133.8747726270. The cubic root of 1285672 is about 108.7368451961.

The spelling of 1285672 in words is "one million, two hundred eighty-five thousand, six hundred seventy-two".