1457320 has 16 divisors (see below), whose sum is σ = 3279060. Its totient is φ = 582912.

The previous prime is 1457293. The next prime is 1457321. The reversal of 1457320 is 237541.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 31684 = 1194^2 + 178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1457291 and 1457300.

It is not an unprimeable number, because it can be changed into a prime (1457321) 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, 18177 + ... + 18256.

2^1457320 is an apocalyptic number.

1457320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1457320 is an abundant number, since it is smaller than the sum of its proper divisors (1821740).

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

1457320 is a wasteful number, since it uses less digits than its factorization.

1457320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36444 (or 36440 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1457320 is about 1207.1950960802. The cubic root of 1457320 is about 113.3752632242.

The spelling of 1457320 in words is "one million, four hundred fifty-seven thousand, three hundred twenty".