7488281 has 4 divisors (see below), whose sum is σ = 7670964. Its totient is φ = 7305600.

The previous prime is 7488277. The next prime is 7488289. The reversal of 7488281 is 1828847.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3182656 + 4305625 = 1784^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 7488281 - 2² = 7488277 is a prime.

It is a super-2 number, since 2×7488281² = 112148704669922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7488289) 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, 91280 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (1917741).

Almost surely, 2^7488281 is an apocalyptic number.

It is an amenable number.

7488281 is a deficient number, since it is larger than the sum of its proper divisors (182683).

7488281 is a wasteful number, since it uses less digits than its factorization.

7488281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182682.

The product of its digits is 28672, while the sum is 38.

The square root of 7488281 is about 2736.4723641945. The cubic root of 7488281 is about 195.6413770582.

The spelling of 7488281 in words is "seven million, four hundred eighty-eight thousand, two hundred eighty-one".