72422260 has 12 divisors (see below), whose sum is σ = 152086788. Its totient is φ = 28968896.

The previous prime is 72422179. The next prime is 72422279. The reversal of 72422260 is 6222427.

It can be written as a sum of positive squares in 2 ways, for example, as 45319824 + 27102436 = 6732^2 + 5206^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1810537 + ... + 1810576.

It is an arithmetic number, because the mean of its divisors is an integer number (12673899).

Almost surely, 2^72422260 is an apocalyptic number.

It is an amenable number.

72422260 is an abundant number, since it is smaller than the sum of its proper divisors (79664528).

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

72422260 is a wasteful number, since it uses less digits than its factorization.

72422260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621122 (or 3621120 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 72422260 is about 8510.1269085719. The cubic root of 72422260 is about 416.8284541492.

Adding to 72422260 its reverse (6222427), we get a palindrome (78644687).

The spelling of 72422260 in words is "seventy-two million, four hundred twenty-two thousand, two hundred sixty".