73139448 has 32 divisors (see below), whose sum is σ = 190800000. Its totient is φ = 23319648.

The previous prime is 73139441. The next prime is 73139459. The reversal of 73139448 is 84493137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73139441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 65698 + ... + 66801.

It is an arithmetic number, because the mean of its divisors is an integer number (5962500).

Almost surely, 2^73139448 is an apocalyptic number.

It is an amenable number.

73139448 is an abundant number, since it is smaller than the sum of its proper divisors (117660552).

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

73139448 is a wasteful number, since it uses less digits than its factorization.

73139448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132531 (or 132527 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 73139448 is about 8552.1604288039. The cubic root of 73139448 is about 418.1998693130.

It can be divided in two parts, 7313 and 9448, that added together give a palindrome (16761).

The spelling of 73139448 in words is "seventy-three million, one hundred thirty-nine thousand, four hundred forty-eight".