1457216 has 14 divisors (see below), whose sum is σ = 2891790. Its totient is φ = 728576.

The previous prime is 1457213. The next prime is 1457219. The reversal of 1457216 is 6127541.

It is an interprime number because it is at equal distance from previous prime (1457213) and next prime (1457219).

It can be written as a sum of positive squares in only one way, i.e., 817216 + 640000 = 904^2 + 800^2 .

It is not an unprimeable number, because it can be changed into a prime (1457213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321 + ... + 11448.

2^1457216 is an apocalyptic number.

1457216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1457216 is a deficient number, since it is larger than the sum of its proper divisors (1434574).

1457216 is an equidigital number, since it uses as much as digits as its factorization.

1457216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22781 (or 22771 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1457216 is about 1207.1520202526. The cubic root of 1457216 is about 113.3725661941.

The spelling of 1457216 in words is "one million, four hundred fifty-seven thousand, two hundred sixteen".