7284768129 has 40 divisors (see below), whose sum is σ = 11329709160. Its totient is φ = 4658943744.

The previous prime is 7284768061. The next prime is 7284768137. The reversal of 7284768129 is 9218674827.

It is a happy number.

7284768129 is a `hidden beast` number, since 72 + 8 + 476 + 81 + 29 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 248913729 + 7035854400 = 15777^2 + 83880^2 .

It is not a de Polignac number, because 7284768129 - 2⁹ = 7284767617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7284768629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 358917 + ... + 378669.

It is an arithmetic number, because the mean of its divisors is an integer number (283242729).

Almost surely, 2^7284768129 is an apocalyptic number.

It is an amenable number.

7284768129 is a deficient number, since it is larger than the sum of its proper divisors (4044941031).

7284768129 is a wasteful number, since it uses less digits than its factorization.

7284768129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19951 (or 19942 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 7284768129 is about 85350.8531240315. The cubic root of 7284768129 is about 1938.5272530476.

The spelling of 7284768129 in words is "seven billion, two hundred eighty-four million, seven hundred sixty-eight thousand, one hundred twenty-nine".