72097130 has 24 divisors (see below), whose sum is σ = 150963588. Its totient is φ = 24718848.

The previous prime is 72097117. The next prime is 72097139. The reversal of 72097130 is 3179027.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72097081 + 49 = 8491^2 + 7^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72097093 and 72097102.

It is not an unprimeable number, because it can be changed into a prime (72097139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73079 + ... + 74058.

Almost surely, 2^72097130 is an apocalyptic number.

72097130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72097130 is an abundant number, since it is smaller than the sum of its proper divisors (78866458).

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

72097130 is a wasteful number, since it uses less digits than its factorization.

72097130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147158 (or 147151 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 72097130 is about 8491.0028854076. The cubic root of 72097130 is about 416.2037532751.

It can be divided in two parts, 72097 and 130, that added together give a palindrome (72227).

The spelling of 72097130 in words is "seventy-two million, ninety-seven thousand, one hundred thirty".