28764414520 has 32 divisors (see below), whose sum is σ = 64725279120. Its totient is φ = 11504815360.

The previous prime is 28764414517. The next prime is 28764414557. The reversal of 28764414520 is 2541446782.

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 7 ways as a sum of consecutive naturals, for example, 656004 + ... + 698476.

Almost surely, 2^28764414520 is an apocalyptic number.

28764414520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28764414520 is an abundant number, since it is smaller than the sum of its proper divisors (35960864600).

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

28764414520 is a wasteful number, since it uses less digits than its factorization.

28764414520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59415 (or 59411 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 28764414520 in words is "twenty-eight billion, seven hundred sixty-four million, four hundred fourteen thousand, five hundred twenty".