28784547340 has 24 divisors (see below), whose sum is σ = 60466950432. Its totient is φ = 11510123520.

The previous prime is 28784547317. The next prime is 28784547349. The reversal of 28784547340 is 4374548782.

It is not an unprimeable number, because it can be changed into a prime (28784547349) 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 7 ways as a sum of consecutive naturals, for example, 166656 + ... + 292135.

It is an arithmetic number, because the mean of its divisors is an integer number (2519456268).

Almost surely, 2^28784547340 is an apocalyptic number.

28784547340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28784547340 is an abundant number, since it is smaller than the sum of its proper divisors (31682403092).

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

28784547340 is a wasteful number, since it uses less digits than its factorization.

28784547340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461937 (or 461935 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 52.

The spelling of 28784547340 in words is "twenty-eight billion, seven hundred eighty-four million, five hundred forty-seven thousand, three hundred forty".