726222000 has 160 divisors (see below), whose sum is σ = 2675971584. Its totient is φ = 165984000.

The previous prime is 726221999. The next prime is 726222011. The reversal of 726222000 is 222627.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33355 + ... + 50645.

Almost surely, 2^726222000 is an apocalyptic number.

726222000 is a gapful number since it is divisible by the number (70) 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 726222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1337985792).

726222000 is an abundant number, since it is smaller than the sum of its proper divisors (1949749584).

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

726222000 is a wasteful number, since it uses less digits than its factorization.

726222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17324 (or 17308 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 726222000 is about 26948.5064521209. The cubic root of 726222000 is about 898.8553348982.

Adding to 726222000 its reverse (222627), we get a palindrome (726444627).

The spelling of 726222000 in words is "seven hundred twenty-six million, two hundred twenty-two thousand".