7281264 has 20 divisors (see below), whose sum is σ = 18810056. Its totient is φ = 2427072.

The previous prime is 7281257. The next prime is 7281277. The reversal of 7281264 is 4621827.

7281264 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75799 + ... + 75894.

Almost surely, 2^7281264 is an apocalyptic number.

It is an amenable number.

7281264 is an abundant number, since it is smaller than the sum of its proper divisors (11528792).

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

7281264 is a wasteful number, since it uses less digits than its factorization.

7281264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151704 (or 151698 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 7281264 is about 2698.3817372640. The cubic root of 7281264 is about 193.8216378864.

The spelling of 7281264 in words is "seven million, two hundred eighty-one thousand, two hundred sixty-four".