28915629612 has 48 divisors (see below), whose sum is σ = 68358850560. Its totient is φ = 9511661952.

The previous prime is 28915629577. The next prime is 28915629637. The reversal of 28915629612 is 21692651982.

It is a super-2 number, since 2×28915629612² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2161408 + ... + 2174744.

It is an arithmetic number, because the mean of its divisors is an integer number (1424142720).

Almost surely, 2^28915629612 is an apocalyptic number.

It is an amenable number.

28915629612 is an abundant number, since it is smaller than the sum of its proper divisors (39443220948).

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

28915629612 is a wasteful number, since it uses less digits than its factorization.

28915629612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15710 (or 15708 counting only the distinct ones).

The product of its digits is 933120, while the sum is 51.

The spelling of 28915629612 in words is "twenty-eight billion, nine hundred fifteen million, six hundred twenty-nine thousand, six hundred twelve".