72549448 has 24 divisors (see below), whose sum is σ = 143572230. Its totient is φ = 34364160.

The previous prime is 72549439. The next prime is 72549457. The reversal of 72549448 is 84494527.

It is an interprime number because it is at equal distance from previous prime (72549439) and next prime (72549457).

It can be written as a sum of positive squares in only one way, i.e., 63075364 + 9474084 = 7942^2 + 3078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9673 + ... + 15448.

Almost surely, 2^72549448 is an apocalyptic number.

It is an amenable number.

72549448 is a deficient number, since it is larger than the sum of its proper divisors (71022782).

72549448 is a wasteful number, since it uses less digits than its factorization.

72549448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25165 (or 25142 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 72549448 is about 8517.5963745648. The cubic root of 72549448 is about 417.0723228729.

The spelling of 72549448 in words is "seventy-two million, five hundred forty-nine thousand, four hundred forty-eight".