28201867740 has 96 divisors (see below), whose sum is σ = 87773280000. Its totient is φ = 7517572416.

The previous prime is 28201867721. The next prime is 28201867787. The reversal of 28201867740 is 4776810282.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1621611 + ... + 1638909.

It is an arithmetic number, because the mean of its divisors is an integer number (914305000).

Almost surely, 2^28201867740 is an apocalyptic number.

28201867740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28201867740 is an abundant number, since it is smaller than the sum of its proper divisors (59571412260).

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

28201867740 is a wasteful number, since it uses less digits than its factorization.

28201867740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20336 (or 20328 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 28201867740 in words is "twenty-eight billion, two hundred one million, eight hundred sixty-seven thousand, seven hundred forty".