28762640305 has 64 divisors (see below), whose sum is σ = 40765390848. Its totient is φ = 19077949440.

The previous prime is 28762640303. The next prime is 28762640311. The reversal of 28762640305 is 50304626782.

It is not a de Polignac number, because 28762640305 - 2¹ = 28762640303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28762640303) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29023360 + ... + 29024350.

It is an arithmetic number, because the mean of its divisors is an integer number (636959232).

Almost surely, 2^28762640305 is an apocalyptic number.

It is an amenable number.

28762640305 is a deficient number, since it is larger than the sum of its proper divisors (12002750543).

28762640305 is a wasteful number, since it uses less digits than its factorization.

28762640305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 28762640305 in words is "twenty-eight billion, seven hundred sixty-two million, six hundred forty thousand, three hundred five".