73443740 has 48 divisors (see below), whose sum is σ = 171914400. Its totient is φ = 26191872.

The previous prime is 73443703. The next prime is 73443787. The reversal of 73443740 is 4734437.

It is a junction number, because it is equal to n+sod(n) for n = 73443697 and 73443706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776 + ... + 12144.

It is an arithmetic number, because the mean of its divisors is an integer number (3581550).

Almost surely, 2^73443740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73443740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85957200).

73443740 is an abundant number, since it is smaller than the sum of its proper divisors (98470660).

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

73443740 is a wasteful number, since it uses less digits than its factorization.

73443740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11414 (or 11412 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 73443740 is about 8569.9323217864. The cubic root of 73443740 is about 418.7790314765.

The spelling of 73443740 in words is "seventy-three million, four hundred forty-three thousand, seven hundred forty".