102789044 has 12 divisors (see below), whose sum is σ = 180416964. Its totient is φ = 51241344.

The previous prime is 102789017. The next prime is 102789053. The reversal of 102789044 is 440987201.

It can be written as a sum of positive squares in 2 ways, for example, as 28622500 + 74166544 = 5350^2 + 8612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102788995 and 102789013.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36779 + ... + 39474.

It is an arithmetic number, because the mean of its divisors is an integer number (15034747).

Almost surely, 2^102789044 is an apocalyptic number.

It is an amenable number.

102789044 is a deficient number, since it is larger than the sum of its proper divisors (77627920).

102789044 is a wasteful number, since it uses less digits than its factorization.

102789044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76594 (or 76592 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 102789044 is about 10138.4931819280. The cubic root of 102789044 is about 468.4345745450.

The spelling of 102789044 in words is "one hundred two million, seven hundred eighty-nine thousand, forty-four".