1591416 has 72 divisors (see below), whose sum is σ = 4647240. Its totient is φ = 491040.

The previous prime is 1591397. The next prime is 1591417. The reversal of 1591416 is 6141951.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1591416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1591417) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51321 + ... + 51351.

It is an arithmetic number, because the mean of its divisors is an integer number (64545).

2^1591416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1591416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323620).

1591416 is an abundant number, since it is smaller than the sum of its proper divisors (3055824).

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

1591416 is a wasteful number, since it uses less digits than its factorization.

1591416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 59 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 1591416 is about 1261.5133768613. The cubic root of 1591416 is about 116.7511696178.

The spelling of 1591416 in words is "one million, five hundred ninety-one thousand, four hundred sixteen".