102027789 has 32 divisors (see below), whose sum is σ = 158105600. Its totient is φ = 64949040.

The previous prime is 102027787. The next prime is 102027797. The reversal of 102027789 is 987720201.

It is not a de Polignac number, because 102027789 - 2¹ = 102027787 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102027787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65352 + ... + 66894.

It is an arithmetic number, because the mean of its divisors is an integer number (4940800).

Almost surely, 2^102027789 is an apocalyptic number.

It is an amenable number.

102027789 is a deficient number, since it is larger than the sum of its proper divisors (56077811).

102027789 is a wasteful number, since it uses less digits than its factorization.

102027789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 102027789 is about 10100.8806051750. The cubic root of 102027789 is about 467.2753001406.

The spelling of 102027789 in words is "one hundred two million, twenty-seven thousand, seven hundred eighty-nine".