28304772435 has 48 divisors (see below), whose sum is σ = 53556572160. Its totient is φ = 14301347040.

The previous prime is 28304772427. The next prime is 28304772437. The reversal of 28304772435 is 53427740382.

It is not a de Polignac number, because 28304772435 - 2³ = 28304772427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (28304772437) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 589971 + ... + 636140.

It is an arithmetic number, because the mean of its divisors is an integer number (1115761920).

Almost surely, 2^28304772435 is an apocalyptic number.

28304772435 is a deficient number, since it is larger than the sum of its proper divisors (25251799725).

28304772435 is a wasteful number, since it uses less digits than its factorization.

28304772435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226150 (or 1226138 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 28304772435 in words is "twenty-eight billion, three hundred four million, seven hundred seventy-two thousand, four hundred thirty-five".