7280130 has 64 divisors (see below), whose sum is σ = 20539008. Its totient is φ = 1628160.

The previous prime is 7280129. The next prime is 7280137. The reversal of 7280130 is 310827.

7280130 = T₁₁₄₅ + T₁₁₄₆ + ... + T₁₁₅₅.

It is a junction number, because it is equal to n+sod(n) for n = 7280097 and 7280106.

It is not an unprimeable number, because it can be changed into a prime (7280137) 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, 3442 + ... + 5138.

It is an arithmetic number, because the mean of its divisors is an integer number (320922).

Almost surely, 2^7280130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7280130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10269504).

7280130 is an abundant number, since it is smaller than the sum of its proper divisors (13258878).

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

7280130 is a wasteful number, since it uses less digits than its factorization.

7280130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 7280130 is about 2698.1716031417. The cubic root of 7280130 is about 193.8115752953.

Adding to 7280130 its reverse (310827), we get a palindrome (7590957).

The spelling of 7280130 in words is "seven million, two hundred eighty thousand, one hundred thirty".