1591872 has 28 divisors (see below), whose sum is σ = 4212336. Its totient is φ = 530560.

The previous prime is 1591871. The next prime is 1591873. The reversal of 1591872 is 2781951.

It is an interprime number because it is at equal distance from previous prime (1591871) and next prime (1591873).

It is not an unprimeable number, because it can be changed into a prime (1591871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954 + ... + 4337.

2^1591872 is an apocalyptic number.

1591872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1591872 is an abundant number, since it is smaller than the sum of its proper divisors (2620464).

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

1591872 is an equidigital number, since it uses as much as digits as its factorization.

1591872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306 (or 8296 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 1591872 is about 1261.6940992174. The cubic root of 1591872 is about 116.7623197401.

The spelling of 1591872 in words is "one million, five hundred ninety-one thousand, eight hundred seventy-two".