7284047640 has 32 divisors (see below), whose sum is σ = 21852143280. Its totient is φ = 1942412672.

The previous prime is 7284047621. The next prime is 7284047663. The reversal of 7284047640 is 467404827.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7284047592 and 7284047601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30350079 + ... + 30350318.

Almost surely, 2^7284047640 is an apocalyptic number.

It is an amenable number.

7284047640 is an abundant number, since it is smaller than the sum of its proper divisors (14568095640).

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

7284047640 is a wasteful number, since it uses less digits than its factorization.

7284047640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60700411 (or 60700407 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The square root of 7284047640 is about 85346.6322709924. The cubic root of 7284047640 is about 1938.4633419029.

The spelling of 7284047640 in words is "seven billion, two hundred eighty-four million, forty-seven thousand, six hundred forty".