102798105 has 16 divisors (see below), whose sum is σ = 165528384. Its totient is φ = 54475200.

The previous prime is 102798083. The next prime is 102798107. The reversal of 102798105 is 501897201.

It is not a de Polignac number, because 102798105 - 2¹⁶ = 102732569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102798107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19471 + ... + 24180.

It is an arithmetic number, because the mean of its divisors is an integer number (10345524).

Almost surely, 2^102798105 is an apocalyptic number.

102798105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102798105 is a deficient number, since it is larger than the sum of its proper divisors (62730279).

102798105 is a wasteful number, since it uses less digits than its factorization.

102798105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43816.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 102798105 is about 10138.9400333565. The cubic root of 102798105 is about 468.4483385313.

The spelling of 102798105 in words is "one hundred two million, seven hundred ninety-eight thousand, one hundred five".