73234728 has 48 divisors (see below), whose sum is σ = 226680480. Its totient is φ = 20924064.

The previous prime is 73234727. The next prime is 73234739. The reversal of 73234728 is 82743237.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 73234692 and 73234701.

It is not an unprimeable number, because it can be changed into a prime (73234723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72150 + ... + 73157.

It is an arithmetic number, because the mean of its divisors is an integer number (4722510).

Almost surely, 2^73234728 is an apocalyptic number.

It is an amenable number.

73234728 is an abundant number, since it is smaller than the sum of its proper divisors (153445752).

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

73234728 is a wasteful number, since it uses less digits than its factorization.

73234728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145326 (or 145319 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 73234728 is about 8557.7291380366. The cubic root of 73234728 is about 418.3813892015.

The spelling of 73234728 in words is "seventy-three million, two hundred thirty-four thousand, seven hundred twenty-eight".