652888728 has 64 divisors (see below), whose sum is σ = 1821312000. Its totient is φ = 216701856.

The previous prime is 652888727. The next prime is 652888729. The reversal of 652888728 is 827888256.

It is an interprime number because it is at equal distance from previous prime (652888727) and next prime (652888729).

It is a super-2 number, since 2×652888728² = 852527382298915968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652888721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45301 + ... + 57947.

It is an arithmetic number, because the mean of its divisors is an integer number (28458000).

Almost surely, 2^652888728 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 652888728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910656000).

652888728 is an abundant number, since it is smaller than the sum of its proper divisors (1168423272).

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

652888728 is a wasteful number, since it uses less digits than its factorization.

652888728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901 (or 12891 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 652888728 is about 25551.6873806800. The cubic root of 652888728 is about 867.5204547439.

The spelling of 652888728 in words is "six hundred fifty-two million, eight hundred eighty-eight thousand, seven hundred twenty-eight".