84457628 has 24 divisors (see below), whose sum is σ = 153377280. Its totient is φ = 40644800.

The previous prime is 84457627. The next prime is 84457687. The reversal of 84457628 is 82675448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84457621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43478 + ... + 45378.

It is an arithmetic number, because the mean of its divisors is an integer number (6390720).

Almost surely, 2^84457628 is an apocalyptic number.

It is an amenable number.

84457628 is a deficient number, since it is larger than the sum of its proper divisors (68919652).

84457628 is a wasteful number, since it uses less digits than its factorization.

84457628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2315 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 84457628 is about 9190.0831334651. The cubic root of 84457628 is about 438.7457877914.

The spelling of 84457628 in words is "eighty-four million, four hundred fifty-seven thousand, six hundred twenty-eight".