73399648 has 36 divisors (see below), whose sum is σ = 168101892. Its totient is φ = 31456320.

The previous prime is 73399631. The next prime is 73399649. The reversal of 73399648 is 84699337.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73399649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21838 + ... + 24973.

It is an arithmetic number, because the mean of its divisors is an integer number (4669497).

Almost surely, 2^73399648 is an apocalyptic number.

It is an amenable number.

73399648 is an abundant number, since it is smaller than the sum of its proper divisors (94702244).

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

73399648 is a wasteful number, since it uses less digits than its factorization.

73399648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46835 (or 46820 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

The square root of 73399648 is about 8567.3594531804. The cubic root of 73399648 is about 418.6952099400.

It can be divided in two parts, 73399 and 648, that added together give a palindrome (74047).

The spelling of 73399648 in words is "seventy-three million, three hundred ninety-nine thousand, six hundred forty-eight".