28915011630 has 48 divisors (see below), whose sum is σ = 75464943840. Its totient is φ = 7681345344.

The previous prime is 28915011599. The next prime is 28915011647. The reversal of 28915011630 is 3611051982.

28915011630 is a `hidden beast` number, since 2 + 8 + 9 + 1 + 5 + 0 + 11 + 630 = 666.

It is a super-3 number, since 3×28915011630³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 587125 + ... + 634464.

It is an arithmetic number, because the mean of its divisors is an integer number (1572186330).

Almost surely, 2^28915011630 is an apocalyptic number.

28915011630 is an abundant number, since it is smaller than the sum of its proper divisors (46549932210).

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

28915011630 is a wasteful number, since it uses less digits than its factorization.

28915011630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221865 (or 1221862 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 28915011630 in words is "twenty-eight billion, nine hundred fifteen million, eleven thousand, six hundred thirty".