72229000 has 32 divisors (see below), whose sum is σ = 169018200. Its totient is φ = 28891200.

The previous prime is 72228997. The next prime is 72229009. The reversal of 72229000 is 92227.

It can be written as a sum of positive squares in 4 ways, for example, as 9597604 + 62631396 = 3098^2 + 7914^2 .

It is not an unprimeable number, because it can be changed into a prime (72229009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35115 + ... + 37114.

Almost surely, 2^72229000 is an apocalyptic number.

It is an amenable number.

72229000 is an abundant number, since it is smaller than the sum of its proper divisors (96789200).

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

72229000 is a wasteful number, since it uses less digits than its factorization.

72229000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72250 (or 72236 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72229000 is about 8498.7646161074. The cubic root of 72229000 is about 416.4573526457.

The spelling of 72229000 in words is "seventy-two million, two hundred twenty-nine thousand".