72422426 has 8 divisors (see below), whose sum is σ = 108926004. Its totient is φ = 36113760.

The previous prime is 72422419. The next prime is 72422461. The reversal of 72422426 is 62422427.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66667225 + 5755201 = 8165^2 + 2399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47795 + ... + 49286.

Almost surely, 2^72422426 is an apocalyptic number.

72422426 is a deficient number, since it is larger than the sum of its proper divisors (36503578).

72422426 is a wasteful number, since it uses less digits than its factorization.

72422426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97456.

The product of its digits is 10752, while the sum is 29.

The square root of 72422426 is about 8510.1366616524. The cubic root of 72422426 is about 416.8287726216.

Subtracting from 72422426 its reverse (62422427), we obtain a palindrome (9999999).

The spelling of 72422426 in words is "seventy-two million, four hundred twenty-two thousand, four hundred twenty-six".