7280872 has 8 divisors (see below), whose sum is σ = 13651650. Its totient is φ = 3640432.

The previous prime is 7280869. The next prime is 7280881. The reversal of 7280872 is 2780827.

It can be written as a sum of positive squares in only one way, i.e., 5447556 + 1833316 = 2334^2 + 1354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×7280872² = 106022194160768, which contains 22 as substring.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455047 + ... + 455062.

Almost surely, 2^7280872 is an apocalyptic number.

It is an amenable number.

7280872 is a deficient number, since it is larger than the sum of its proper divisors (6370778).

7280872 is a wasteful number, since it uses less digits than its factorization.

7280872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910115 (or 910111 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 7280872 is about 2698.3091001588. The cubic root of 7280872 is about 193.8181595780.

The spelling of 7280872 in words is "seven million, two hundred eighty thousand, eight hundred seventy-two".