72228252090 has 16 divisors (see below), whose sum is σ = 173347805088. Its totient is φ = 19260867216.

The previous prime is 72228252059. The next prime is 72228252091. The reversal of 72228252090 is 9025282227.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72228252091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203804172 + ... + 1203804231.

It is an arithmetic number, because the mean of its divisors is an integer number (10834237818).

Almost surely, 2^72228252090 is an apocalyptic number.

72228252090 is an abundant number, since it is smaller than the sum of its proper divisors (101119552998).

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

72228252090 is a wasteful number, since it uses less digits than its factorization.

72228252090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407608413.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 72228252090 in words is "seventy-two billion, two hundred twenty-eight million, two hundred fifty-two thousand, ninety".