722404228 has 48 divisors (see below), whose sum is σ = 1563923200. Its totient is φ = 284321664.

The previous prime is 722404219. The next prime is 722404271. The reversal of 722404228 is 822404227.

It is a self number, because there is not a number n which added to its sum of digits gives 722404228.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67450 + ... + 77422.

Almost surely, 2^722404228 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 722404228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781961600).

722404228 is an abundant number, since it is smaller than the sum of its proper divisors (841518972).

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

722404228 is a wasteful number, since it uses less digits than its factorization.

722404228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196 (or 10194 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 722404228 is about 26877.5785367655. The cubic root of 722404228 is about 897.2774630535.

Subtracting 722404228 from its reverse (822404227), we obtain a palindrome (99999999).

The spelling of 722404228 in words is "seven hundred twenty-two million, four hundred four thousand, two hundred twenty-eight".