1491128 has 8 divisors (see below), whose sum is σ = 2795880. Its totient is φ = 745560.

The previous prime is 1491109. The next prime is 1491157. The reversal of 1491128 is 8211941.

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

It is a junction number, because it is equal to n+sod(n) for n = 1491097 and 1491106.

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, 93188 + ... + 93203.

It is an arithmetic number, because the mean of its divisors is an integer number (349485).

2^1491128 is an apocalyptic number.

It is an amenable number.

1491128 is a deficient number, since it is larger than the sum of its proper divisors (1304752).

1491128 is a wasteful number, since it uses less digits than its factorization.

1491128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186397 (or 186393 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 1491128 is about 1221.1175209618. The cubic root of 1491128 is about 114.2452910610.

The spelling of 1491128 in words is "one million, four hundred ninety-one thousand, one hundred twenty-eight".