102888021 has 8 divisors (see below), whose sum is σ = 144404320. Its totient is φ = 64981872.

The previous prime is 102888013. The next prime is 102888041. The reversal of 102888021 is 120888201.

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

It is not a de Polignac number, because 102888021 - 2³ = 102888013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102888021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102888001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 902470 + ... + 902583.

It is an arithmetic number, because the mean of its divisors is an integer number (18050540).

Almost surely, 2^102888021 is an apocalyptic number.

It is an amenable number.

102888021 is a deficient number, since it is larger than the sum of its proper divisors (41516299).

102888021 is a wasteful number, since it uses less digits than its factorization.

102888021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805075.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 102888021 is about 10143.3732554806. The cubic root of 102888021 is about 468.5848803670.

The spelling of 102888021 in words is "one hundred two million, eight hundred eighty-eight thousand, twenty-one".