73539648 has 336 divisors, whose sum is σ = 275149056. Its totient is φ = 18247680.

The previous prime is 73539647. The next prime is 73539649. The reversal of 73539648 is 84693537.

73539648 is a `hidden beast` number, since 73 + 539 + 6 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (73539647) and next prime (73539649).

It is a tau number, because it is divible by the number of its divisors (336).

It is not an unprimeable number, because it can be changed into a prime (73539643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1205538 + ... + 1205598.

It is an arithmetic number, because the mean of its divisors is an integer number (818896).

Almost surely, 2^73539648 is an apocalyptic number.

73539648 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73539648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137574528).

73539648 is an abundant number, since it is smaller than the sum of its proper divisors (201609408).

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

73539648 is a wasteful number, since it uses less digits than its factorization.

73539648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 109 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 73539648 is about 8575.5261063097. The cubic root of 73539648 is about 418.9612425536.

The spelling of 73539648 in words is "seventy-three million, five hundred thirty-nine thousand, six hundred forty-eight".