1091432 has 8 divisors (see below), whose sum is σ = 2046450. Its totient is φ = 545712.

The previous prime is 1091413. The next prime is 1091443. The reversal of 1091432 is 2341901.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 256036 = 914^2 + 506^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68207 + ... + 68222.

2^1091432 is an apocalyptic number.

It is an amenable number.

1091432 is a deficient number, since it is larger than the sum of its proper divisors (955018).

1091432 is a wasteful number, since it uses less digits than its factorization.

1091432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136435 (or 136431 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1091432 is about 1044.7162294135. The cubic root of 1091432 is about 102.9592951925.

The spelling of 1091432 in words is "one million, ninety-one thousand, four hundred thirty-two".