7280887 has 4 divisors (see below), whose sum is σ = 7291080. Its totient is φ = 7270696.

The previous prime is 7280881. The next prime is 7280891. The reversal of 7280887 is 7880827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7280887 - 2¹⁵ = 7248119 is a prime.

It is a super-2 number, since 2×7280887² = 106022631013538, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3937 + ... + 5482.

It is an arithmetic number, because the mean of its divisors is an integer number (1822770).

Almost surely, 2^7280887 is an apocalyptic number.

7280887 is a deficient number, since it is larger than the sum of its proper divisors (10193).

7280887 is an equidigital number, since it uses as much as digits as its factorization.

7280887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10192.

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 7280887 is about 2698.3118796759. The cubic root of 7280887 is about 193.8182926789.

The spelling of 7280887 in words is "seven million, two hundred eighty thousand, eight hundred eighty-seven".