73645230 has 16 divisors (see below), whose sum is σ = 176748624. Its totient is φ = 19638720.

The previous prime is 73645219. The next prime is 73645237. The reversal of 73645230 is 3254637.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2454841 = 73645230 / (7 + 3 + 6 + 4 + 5 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73645237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227391 + ... + 1227450.

It is an arithmetic number, because the mean of its divisors is an integer number (11046789).

Almost surely, 2^73645230 is an apocalyptic number.

73645230 is an abundant number, since it is smaller than the sum of its proper divisors (103103394).

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

73645230 is a wasteful number, since it uses less digits than its factorization.

73645230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454851.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 73645230 is about 8581.6799054731. The cubic root of 73645230 is about 419.1616497012.

Adding to 73645230 its reverse (3254637), we get a palindrome (76899867).

The spelling of 73645230 in words is "seventy-three million, six hundred forty-five thousand, two hundred thirty".