102928489 has 4 divisors (see below), whose sum is σ = 108983124. Its totient is φ = 96873856.

The previous prime is 102928451. The next prime is 102928499. The reversal of 102928489 is 984829201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73822464 + 29106025 = 8592^2 + 5395^2 .

It is a cyclic number.

It is not a de Polignac number, because 102928489 - 2¹³ = 102920297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102928429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027292 + ... + 3027325.

It is an arithmetic number, because the mean of its divisors is an integer number (27245781).

Almost surely, 2^102928489 is an apocalyptic number.

It is an amenable number.

102928489 is a deficient number, since it is larger than the sum of its proper divisors (6054635).

102928489 is an equidigital number, since it uses as much as digits as its factorization.

102928489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054634.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 102928489 is about 10145.3678592745. The cubic root of 102928489 is about 468.6463070429.

It can be divided in two parts, 10292 and 8489, that added together give a palindrome (18781).

The spelling of 102928489 in words is "one hundred two million, nine hundred twenty-eight thousand, four hundred eighty-nine".