457863840 has 480 divisors, whose sum is σ = 1902700800. Its totient is φ = 103638528.

The previous prime is 457863797. The next prime is 457863859. The reversal of 457863840 is 48368754.

457863840 is a `hidden beast` number, since 4 + 5 + 7 + 8 + 638 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4445229 + ... + 4445331.

It is an arithmetic number, because the mean of its divisors is an integer number (3963960).

Almost surely, 2^457863840 is an apocalyptic number.

457863840 is a gapful number since it is divisible by the number (40) 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 457863840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951350400).

457863840 is an abundant number, since it is smaller than the sum of its proper divisors (1444836960).

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

457863840 is a wasteful number, since it uses less digits than its factorization.

457863840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 457863840 is about 21397.7531530766. The cubic root of 457863840 is about 770.7474835061.

The spelling of 457863840 in words is "four hundred fifty-seven million, eight hundred sixty-three thousand, eight hundred forty".