72481106 has 4 divisors (see below), whose sum is σ = 108721662. Its totient is φ = 36240552.

The previous prime is 72481103. The next prime is 72481109. The reversal of 72481106 is 60118427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60118427 = 233 ⋅258019.

It is an interprime number because it is at equal distance from previous prime (72481103) and next prime (72481109).

It can be written as a sum of positive squares in only one way, i.e., 69872881 + 2608225 = 8359^2 + 1615^2 .

It is not an unprimeable number, because it can be changed into a prime (72481103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18120275 + ... + 18120278.

Almost surely, 2^72481106 is an apocalyptic number.

72481106 is a deficient number, since it is larger than the sum of its proper divisors (36240556).

72481106 is a wasteful number, since it uses less digits than its factorization.

72481106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36240555.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 72481106 is about 8513.5836167856. The cubic root of 72481106 is about 416.9413202150.

The spelling of 72481106 in words is "seventy-two million, four hundred eighty-one thousand, one hundred six".