457720 has 16 divisors (see below), whose sum is σ = 1029960. Its totient is φ = 183072.

The previous prime is 457711. The next prime is 457739. The reversal of 457720 is 27754.

It is a congruent number.

It is an unprimeable number.

457720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5682 + ... + 5761.

2⁴⁵⁷⁷²⁰ is an apocalyptic number.

457720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

457720 is an abundant number, since it is smaller than the sum of its proper divisors (572240).

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

457720 is a wasteful number, since it uses less digits than its factorization.

457720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11454 (or 11450 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 457720 is about 676.5500720568. The cubic root of 457720 is about 77.0666763781.

The spelling of 457720 in words is "four hundred fifty-seven thousand, seven hundred twenty".