73680784 has 20 divisors (see below), whose sum is σ = 150270640. Its totient is φ = 34901280.

The previous prime is 73680773. The next prime is 73680787. The reversal of 73680784 is 48708637.

It is a self number, because there is not a number n which added to its sum of digits gives 73680784.

It is not an unprimeable number, because it can be changed into a prime (73680787) 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, 120882 + ... + 121489.

It is an arithmetic number, because the mean of its divisors is an integer number (7513532).

Almost surely, 2^73680784 is an apocalyptic number.

It is an amenable number.

73680784 is an abundant number, since it is smaller than the sum of its proper divisors (76589856).

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

73680784 is a wasteful number, since it uses less digits than its factorization.

73680784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242398 (or 242392 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 73680784 is about 8583.7511613513. The cubic root of 73680784 is about 419.2290922936.

The spelling of 73680784 in words is "seventy-three million, six hundred eighty thousand, seven hundred eighty-four".