73072230 has 96 divisors (see below), whose sum is σ = 222600960. Its totient is φ = 15180480.

The previous prime is 73072229. The next prime is 73072231. The reversal of 73072230 is 3227037.

It is an interprime number because it is at equal distance from previous prime (73072229) and next prime (73072231).

It is a self number, because there is not a number n which added to its sum of digits gives 73072230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73072231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13911 + ... + 18429.

It is an arithmetic number, because the mean of its divisors is an integer number (2318760).

Almost surely, 2^73072230 is an apocalyptic number.

73072230 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 73072230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111300480).

73072230 is an abundant number, since it is smaller than the sum of its proper divisors (149528730).

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

73072230 is a wasteful number, since it uses less digits than its factorization.

73072230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554 (or 4547 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 73072230 is about 8548.2296412766. The cubic root of 73072230 is about 418.0717160590.

Adding to 73072230 its reverse (3227037), we get a palindrome (76299267).

The spelling of 73072230 in words is "seventy-three million, seventy-two thousand, two hundred thirty".