28490638646976 has 224 divisors, whose sum is σ = 84776660398080. Its totient is φ = 8369299660800.

The previous prime is 28490638646957. The next prime is 28490638646983. The reversal of 28490638646976 is 67964683609482.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12547105 + ... + 14642783.

It is an arithmetic number, because the mean of its divisors is an integer number (378467233920).

Almost surely, 2^{28490638646976} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28490638646976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42388330199040).

28490638646976 is an abundant number, since it is smaller than the sum of its proper divisors (56286021751104).

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

28490638646976 is a wasteful number, since it uses less digits than its factorization.

28490638646976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095903 (or 2095893 counting only the distinct ones).

The product of its (nonzero) digits is 4514807808, while the sum is 78.

The spelling of 28490638646976 in words is "twenty-eight trillion, four hundred ninety billion, six hundred thirty-eight million, six hundred forty-six thousand, nine hundred seventy-six".