72300001530 has 64 divisors (see below), whose sum is σ = 174001435776. Its totient is φ = 19226592000.

The previous prime is 72300001493. The next prime is 72300001531. The reversal of 72300001530 is 3510000327.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72300001497 and 72300001506.

It is not an unprimeable number, because it can be changed into a prime (72300001531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20244645 + ... + 20248215.

It is an arithmetic number, because the mean of its divisors is an integer number (2718772434).

Almost surely, 2^72300001530 is an apocalyptic number.

72300001530 is an abundant number, since it is smaller than the sum of its proper divisors (101701434246).

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

72300001530 is a wasteful number, since it uses less digits than its factorization.

72300001530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263.

The product of its (nonzero) digits is 630, while the sum is 21.

Adding to 72300001530 its reverse (3510000327), we get a palindrome (75810001857).

The spelling of 72300001530 in words is "seventy-two billion, three hundred million, one thousand, five hundred thirty".