1181672 has 8 divisors (see below), whose sum is σ = 2215650. Its totient is φ = 590832.

The previous prime is 1181647. The next prime is 1181681. The reversal of 1181672 is 2761811.

It can be written as a sum of positive squares in only one way, i.e., 1110916 + 70756 = 1054^2 + 266^2 .

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73847 + ... + 73862.

2^1181672 is an apocalyptic number.

It is an amenable number.

1181672 is a deficient number, since it is larger than the sum of its proper divisors (1033978).

1181672 is a wasteful number, since it uses less digits than its factorization.

1181672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147715 (or 147711 counting only the distinct ones).

The product of its digits is 672, while the sum is 26.

The square root of 1181672 is about 1087.0473770724. The cubic root of 1181672 is about 105.7220676730.

The spelling of 1181672 in words is "one million, one hundred eighty-one thousand, six hundred seventy-two".