28747211800 has 24 divisors (see below), whose sum is σ = 66837267900. Its totient is φ = 11498884640.

The previous prime is 28747211789. The next prime is 28747211813. The reversal of 28747211800 is 811274782.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 5 ways as a sum of consecutive naturals, for example, 71867830 + ... + 71868229.

Almost surely, 2^28747211800 is an apocalyptic number.

28747211800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28747211800 is an abundant number, since it is smaller than the sum of its proper divisors (38090056100).

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

28747211800 is a wasteful number, since it uses less digits than its factorization.

28747211800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143736075 (or 143736066 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The spelling of 28747211800 in words is "twenty-eight billion, seven hundred forty-seven million, two hundred eleven thousand, eight hundred".