457328821 has 8 divisors (see below), whose sum is σ = 464220288. Its totient is φ = 450450000.

The previous prime is 457328819. The next prime is 457328827. The reversal of 457328821 is 128823754.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 457328821 - 2¹ = 457328819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457328827) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 89896 + ... + 94846.

It is an arithmetic number, because the mean of its divisors is an integer number (58027536).

Almost surely, 2^457328821 is an apocalyptic number.

It is an amenable number.

457328821 is a deficient number, since it is larger than the sum of its proper divisors (6891467).

457328821 is a wasteful number, since it uses less digits than its factorization.

457328821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323.

The product of its digits is 107520, while the sum is 40.

The square root of 457328821 is about 21385.2477423106. The cubic root of 457328821 is about 770.4471574895.

The spelling of 457328821 in words is "four hundred fifty-seven million, three hundred twenty-eight thousand, eight hundred twenty-one".