28628667210 has 128 divisors (see below), whose sum is σ = 81145774080. Its totient is φ = 6372691200.

The previous prime is 28628667187. The next prime is 28628667217. The reversal of 28628667210 is 1276682682.

It is a self number, because there is not a number n which added to its sum of digits gives 28628667210.

It is not an unprimeable number, because it can be changed into a prime (28628667217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 801921 + ... + 836859.

It is an arithmetic number, because the mean of its divisors is an integer number (633951360).

Almost surely, 2^28628667210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28628667210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40572887040).

28628667210 is an abundant number, since it is smaller than the sum of its proper divisors (52517106870).

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

28628667210 is a wasteful number, since it uses less digits than its factorization.

28628667210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35164.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 28628667210 in words is "twenty-eight billion, six hundred twenty-eight million, six hundred sixty-seven thousand, two hundred ten".