1357216 has 48 divisors (see below), whose sum is σ = 3132864. Its totient is φ = 566784.

The previous prime is 1357201. The next prime is 1357333. The reversal of 1357216 is 6127531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16311 + ... + 16393.

It is an arithmetic number, because the mean of its divisors is an integer number (65268).

2^1357216 is an apocalyptic number.

1357216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1357216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566432).

1357216 is an abundant number, since it is smaller than the sum of its proper divisors (1775648).

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

1357216 is an equidigital number, since it uses as much as digits as its factorization.

1357216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 165 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 1357216 is about 1164.9961373327. The cubic root of 1357216 is about 110.7175134483.

The spelling of 1357216 in words is "one million, three hundred fifty-seven thousand, two hundred sixteen".