1091672 has 32 divisors (see below), whose sum is σ = 2268000. Its totient is φ = 489984.

The previous prime is 1091663. The next prime is 1091681. The reversal of 1091672 is 2761901.

It is an interprime number because it is at equal distance from previous prime (1091663) and next prime (1091681).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954 + ... + 3302.

It is an arithmetic number, because the mean of its divisors is an integer number (70875).

2^1091672 is an apocalyptic number.

It is an amenable number.

1091672 is an abundant number, since it is smaller than the sum of its proper divisors (1176328).

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

1091672 is a wasteful number, since it uses less digits than its factorization.

1091672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1091672 is about 1044.8310868270. The cubic root of 1091672 is about 102.9668413703.

The spelling of 1091672 in words is "one million, ninety-one thousand, six hundred seventy-two".