102688026 has 64 divisors (see below), whose sum is σ = 245548800. Its totient is φ = 28600320.

The previous prime is 102688021. The next prime is 102688049. The reversal of 102688026 is 620886201.

It is not an unprimeable number, because it can be changed into a prime (102688021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83770 + ... + 84986.

It is an arithmetic number, because the mean of its divisors is an integer number (3836700).

Almost surely, 2^102688026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102688026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122774400).

102688026 is an abundant number, since it is smaller than the sum of its proper divisors (142860774).

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

102688026 is a wasteful number, since it uses less digits than its factorization.

102688026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 102688026 is about 10133.5100532836. The cubic root of 102688026 is about 468.2810697481.

The spelling of 102688026 in words is "one hundred two million, six hundred eighty-eight thousand, twenty-six".