73061730 has 256 divisors, whose sum is σ = 243302400. Its totient is φ = 15240960.

The previous prime is 73061693. The next prime is 73061749. The reversal of 73061730 is 3716037.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 73061694 and 73061703.

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 127 ways as a sum of consecutive naturals, for example, 1699089 + ... + 1699131.

It is an arithmetic number, because the mean of its divisors is an integer number (950400).

Almost surely, 2^73061730 is an apocalyptic number.

73061730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 73061730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121651200).

73061730 is an abundant number, since it is smaller than the sum of its proper divisors (170240670).

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

73061730 is a wasteful number, since it uses less digits than its factorization.

73061730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 73061730 is about 8547.6154569564. The cubic root of 73061730 is about 418.0516903789.

Adding to 73061730 its reverse (3716037), we get a palindrome (76777767).

The spelling of 73061730 in words is "seventy-three million, sixty-one thousand, seven hundred thirty".