28348335720 has 128 divisors (see below), whose sum is σ = 100053014400. Its totient is φ = 7114871808.

The previous prime is 28348335641. The next prime is 28348335721. The reversal of 28348335720 is 2753384382.

28348335720 is a `hidden beast` number, since 2 + 8 + 3 + 48 + 33 + 572 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (28348335721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753654 + ... + 790373.

It is an arithmetic number, because the mean of its divisors is an integer number (781664175).

Almost surely, 2^28348335720 is an apocalyptic number.

28348335720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28348335720 is an abundant number, since it is smaller than the sum of its proper divisors (71704678680).

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

28348335720 is a wasteful number, since it uses less digits than its factorization.

28348335720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544064 (or 1544054 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 28348335720 in words is "twenty-eight billion, three hundred forty-eight million, three hundred thirty-five thousand, seven hundred twenty".