28530415011 has 16 divisors (see below), whose sum is σ = 43487166464. Its totient is φ = 16298501184.

The previous prime is 28530415003. The next prime is 28530415013. The reversal of 28530415011 is 11051403582.

It is not a de Polignac number, because 28530415011 - 2³ = 28530415003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28530415011.

It is not an unprimeable number, because it can be changed into a prime (28530415013) 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 15 ways as a sum of consecutive naturals, for example, 114346 + ... + 264831.

It is an arithmetic number, because the mean of its divisors is an integer number (2717947904).

Almost surely, 2^28530415011 is an apocalyptic number.

28530415011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28530415011 is a deficient number, since it is larger than the sum of its proper divisors (14956751453).

28530415011 is a wasteful number, since it uses less digits than its factorization.

28530415011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382770.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 28530415011 its reverse (11051403582), we get a palindrome (39581818593).

The spelling of 28530415011 in words is "twenty-eight billion, five hundred thirty million, four hundred fifteen thousand, eleven".