73445648 has 20 divisors (see below), whose sum is σ = 143902620. Its totient is φ = 36309504.

The previous prime is 73445641. The next prime is 73445663. The reversal of 73445648 is 84654437.

It can be written as a sum of positive squares in 2 ways, for example, as 25725184 + 47720464 = 5072^2 + 6908^2 .

It is not an unprimeable number, because it can be changed into a prime (73445641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24365 + ... + 27212.

It is an arithmetic number, because the mean of its divisors is an integer number (7195131).

Almost surely, 2^73445648 is an apocalyptic number.

It is an amenable number.

73445648 is a deficient number, since it is larger than the sum of its proper divisors (70456972).

73445648 is a wasteful number, since it uses less digits than its factorization.

73445648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51674 (or 51668 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 73445648 is about 8570.0436404957. The cubic root of 73445648 is about 418.7826579416.

The spelling of 73445648 in words is "seventy-three million, four hundred forty-five thousand, six hundred forty-eight".