652220028 has 72 divisors (see below), whose sum is σ = 1749619872. Its totient is φ = 204152832.

The previous prime is 652219933. The next prime is 652220029. The reversal of 652220028 is 820022256.

652220028 is a `hidden beast` number, since 652 + 2 + 2 + 0 + 0 + 2 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 652219983 and 652220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652220029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352201 + ... + 354047.

It is an arithmetic number, because the mean of its divisors is an integer number (24300276).

Almost surely, 2^652220028 is an apocalyptic number.

652220028 is a gapful number since it is divisible by the number (68) 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 652220028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874809936).

652220028 is an abundant number, since it is smaller than the sum of its proper divisors (1097399844).

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

652220028 is a wasteful number, since it uses less digits than its factorization.

652220028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451 (or 2446 counting only the distinct ones).

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

The square root of 652220028 is about 25538.5987869343. The cubic root of 652220028 is about 867.2241770531.

The spelling of 652220028 in words is "six hundred fifty-two million, two hundred twenty thousand, twenty-eight".