7145280 has 112 divisors (see below), whose sum is σ = 25237440. Its totient is φ = 1903104.

The previous prime is 7145251. The next prime is 7145291. The reversal of 7145280 is 825417.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8227 + ... + 9053.

Almost surely, 2^7145280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7145280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12618720).

7145280 is an abundant number, since it is smaller than the sum of its proper divisors (18092160).

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

7145280 is a wasteful number, since it uses less digits than its factorization.

7145280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 7145280 is about 2673.0656557593. The cubic root of 7145280 is about 192.6074511146.

The spelling of 7145280 in words is "seven million, one hundred forty-five thousand, two hundred eighty".