28383750103890 has 64 divisors (see below), whose sum is σ = 68223326988672. Its totient is φ = 7557631603200.

The previous prime is 28383750103871. The next prime is 28383750103903. The reversal of 28383750103890 is 9830105738382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28383750103890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 644287104 + ... + 644331156.

It is an arithmetic number, because the mean of its divisors is an integer number (1065989484198).

Almost surely, 2^{28383750103890} is an apocalyptic number.

28383750103890 is an abundant number, since it is smaller than the sum of its proper divisors (39839576884782).

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

28383750103890 is a wasteful number, since it uses less digits than its factorization.

28383750103890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75835.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 28383750103890 in words is "twenty-eight trillion, three hundred eighty-three billion, seven hundred fifty million, one hundred three thousand, eight hundred ninety".