1491088 has 20 divisors (see below), whose sum is σ = 2960748. Its totient is φ = 727040.

The previous prime is 1491079. The next prime is 1491097. The reversal of 1491088 is 8801941.

It is an interprime number because it is at equal distance from previous prime (1491079) and next prime (1491097).

It can be written as a sum of positive squares in 2 ways, for example, as 659344 + 831744 = 812^2 + 912^2 .

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 3 ways as a sum of consecutive naturals, for example, 481 + ... + 1792.

2^1491088 is an apocalyptic number.

It is an amenable number.

1491088 is a deficient number, since it is larger than the sum of its proper divisors (1469660).

1491088 is a wasteful number, since it uses less digits than its factorization.

1491088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 2316 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1491088 is about 1221.1011424120. The cubic root of 1491088 is about 114.2442694960.

The spelling of 1491088 in words is "one million, four hundred ninety-one thousand, eighty-eight".