28631372484390 has 512 divisors, whose sum is σ = 80024008458240. Its totient is φ = 6500933074944.

The previous prime is 28631372484383. The next prime is 28631372484439. The reversal of 28631372484390 is 9348427313682.

It is a happy number.

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 255 ways as a sum of consecutive naturals, for example, 10347440787 + ... + 10347443553.

It is an arithmetic number, because the mean of its divisors is an integer number (156296891520).

Almost surely, 2^{28631372484390} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28631372484390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40012004229120).

28631372484390 is an abundant number, since it is smaller than the sum of its proper divisors (51392635973850).

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

28631372484390 is a wasteful number, since it uses less digits than its factorization.

28631372484390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188.

The product of its (nonzero) digits is 41803776, while the sum is 60.

The spelling of 28631372484390 in words is "twenty-eight trillion, six hundred thirty-one billion, three hundred seventy-two million, four hundred eighty-four thousand, three hundred ninety".