7280816 has 20 divisors (see below), whose sum is σ = 14234952. Its totient is φ = 3607296.

The previous prime is 7280809. The next prime is 7280831. The reversal of 7280816 is 6180827.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206 + ... + 3821.

Almost surely, 2^7280816 is an apocalyptic number.

It is an amenable number.

7280816 is a deficient number, since it is larger than the sum of its proper divisors (6954136).

7280816 is a wasteful number, since it uses less digits than its factorization.

7280816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148 (or 4142 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 7280816 is about 2698.2987232699. The cubic root of 7280816 is about 193.8176626666.

The spelling of 7280816 in words is "seven million, two hundred eighty thousand, eight hundred sixteen".