28903751990 has 8 divisors (see below), whose sum is σ = 52026753600. Its totient is φ = 11561500792.

The previous prime is 28903751969. The next prime is 28903751999. The reversal of 28903751990 is 9915730982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28903751999) 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 3 ways as a sum of consecutive naturals, for example, 1445187590 + ... + 1445187609.

It is an arithmetic number, because the mean of its divisors is an integer number (6503344200).

Almost surely, 2^28903751990 is an apocalyptic number.

28903751990 is a deficient number, since it is larger than the sum of its proper divisors (23123001610).

28903751990 is a wasteful number, since it uses less digits than its factorization.

28903751990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890375206.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 28903751990 in words is "twenty-eight billion, nine hundred three million, seven hundred fifty-one thousand, nine hundred ninety".