654020028 has 96 divisors (see below), whose sum is σ = 1752145920. Its totient is φ = 210833280.

The previous prime is 654020021. The next prime is 654020047. The reversal of 654020028 is 820020456.

654020028 is a `hidden beast` number, since 654 + 0 + 2 + 0 + 0 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 654019983 and 654020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 561775 + ... + 562937.

It is an arithmetic number, because the mean of its divisors is an integer number (18251520).

Almost surely, 2^654020028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654020028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876072960).

654020028 is an abundant number, since it is smaller than the sum of its proper divisors (1098125892).

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

654020028 is a wasteful number, since it uses less digits than its factorization.

654020028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 654020028 is about 25573.8152804778. The cubic root of 654020028 is about 868.0212340930.

The spelling of 654020028 in words is "six hundred fifty-four million, twenty thousand, twenty-eight".