73124740 has 24 divisors (see below), whose sum is σ = 165375000. Its totient is φ = 26999808.

The previous prime is 73124731. The next prime is 73124761. The reversal of 73124740 is 4742137.

It can be written as a sum of positive squares in 4 ways, for example, as 2262016 + 70862724 = 1504^2 + 8418^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73124699 and 73124708.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 140365 + ... + 140884.

It is an arithmetic number, because the mean of its divisors is an integer number (6890625).

Almost surely, 2^73124740 is an apocalyptic number.

It is an amenable number.

73124740 is an abundant number, since it is smaller than the sum of its proper divisors (92250260).

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

73124740 is a wasteful number, since it uses less digits than its factorization.

73124740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281271 (or 281269 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 73124740 is about 8551.3004858910. The cubic root of 73124740 is about 418.1718347562.

Adding to 73124740 its reverse (4742137), we get a palindrome (77866877).

The spelling of 73124740 in words is "seventy-three million, one hundred twenty-four thousand, seven hundred forty".