1491888 has 20 divisors (see below), whose sum is σ = 3854168. Its totient is φ = 497280.

The previous prime is 1491863. The next prime is 1491911. The reversal of 1491888 is 8881941.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15493 + ... + 15588.

2^1491888 is an apocalyptic number.

It is an amenable number.

1491888 is an abundant number, since it is smaller than the sum of its proper divisors (2362280).

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

1491888 is a wasteful number, since it uses less digits than its factorization.

1491888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31092 (or 31086 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 1491888 is about 1221.4286716792. The cubic root of 1491888 is about 114.2646973257.

The spelling of 1491888 in words is "one million, four hundred ninety-one thousand, eight hundred eighty-eight".