73250730 has 80 divisors (see below), whose sum is σ = 225118080. Its totient is φ = 16741728.

The previous prime is 73250729. The next prime is 73250731. The reversal of 73250730 is 3705237.

It is an interprime number because it is at equal distance from previous prime (73250729) and next prime (73250731).

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 = 73250694 and 73250703.

It is not an unprimeable number, because it can be changed into a prime (73250731) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 790 + ... + 12129.

It is an arithmetic number, because the mean of its divisors is an integer number (2813976).

Almost surely, 2^73250730 is an apocalyptic number.

73250730 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 73250730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112559040).

73250730 is an abundant number, since it is smaller than the sum of its proper divisors (151867350).

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

73250730 is a wasteful number, since it uses less digits than its factorization.

73250730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12945 (or 12936 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 73250730 is about 8558.6640312610. The cubic root of 73250730 is about 418.4118594971.

Adding to 73250730 its reverse (3705237), we get a palindrome (76955967).

The spelling of 73250730 in words is "seventy-three million, two hundred fifty thousand, seven hundred thirty".