722582028 has 108 divisors (see below), whose sum is σ = 2182357632. Its totient is φ = 200854080.

The previous prime is 722581987. The next prime is 722582041. The reversal of 722582028 is 820285227.

722582028 is a `hidden beast` number, since 72 + 2 + 582 + 0 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 722581983 and 722582001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 59733 + ... + 70803.

Almost surely, 2^722582028 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 722582028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091178816).

722582028 is an abundant number, since it is smaller than the sum of its proper divisors (1459775604).

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

722582028 is a wasteful number, since it uses less digits than its factorization.

722582028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132 (or 11120 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 722582028 is about 26880.8859229007. The cubic root of 722582028 is about 897.3510704329.

It can be divided in two parts, 7225 and 82028, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 722582028 in words is "seven hundred twenty-two million, five hundred eighty-two thousand, twenty-eight".