84644628 has 24 divisors (see below), whose sum is σ = 198949632. Its totient is φ = 28008384.

The previous prime is 84644621. The next prime is 84644647. The reversal of 84644628 is 82644648.

It is a self number, because there is not a number n which added to its sum of digits gives 84644628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84644621) 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, 24100 + ... + 27387.

It is an arithmetic number, because the mean of its divisors is an integer number (8289568).

Almost surely, 2^84644628 is an apocalyptic number.

It is an amenable number.

84644628 is an abundant number, since it is smaller than the sum of its proper divisors (114305004).

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

84644628 is a wasteful number, since it uses less digits than its factorization.

84644628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51631 (or 51629 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The square root of 84644628 is about 9200.2515183010. The cubic root of 84644628 is about 439.0693622100.

The spelling of 84644628 in words is "eighty-four million, six hundred forty-four thousand, six hundred twenty-eight".