72615130 has 32 divisors (see below), whose sum is σ = 154535040. Its totient is φ = 24037440.

The previous prime is 72615121. The next prime is 72615133. The reversal of 72615130 is 3151627.

It is a junction number, because it is equal to n+sod(n) for n = 72615095 and 72615104.

It is not an unprimeable number, because it can be changed into a prime (72615133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15856 + ... + 19915.

It is an arithmetic number, because the mean of its divisors is an integer number (4829220).

Almost surely, 2^72615130 is an apocalyptic number.

72615130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72615130 is an abundant number, since it is smaller than the sum of its proper divisors (81919910).

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

72615130 is a wasteful number, since it uses less digits than its factorization.

72615130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35814.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 72615130 is about 8521.4511674949. The cubic root of 72615130 is about 417.1981491528.

Adding to 72615130 its reverse (3151627), we get a palindrome (75766757).

The spelling of 72615130 in words is "seventy-two million, six hundred fifteen thousand, one hundred thirty".