102072289 has 8 divisors (see below), whose sum is σ = 113014368. Its totient is φ = 91407360.

The previous prime is 102072277. The next prime is 102072293. The reversal of 102072289 is 982270201.

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

It is not a de Polignac number, because 102072289 - 2⁹ = 102071777 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 102072289.

It is not an unprimeable number, because it can be changed into a prime (102072259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68512 + ... + 69985.

It is an arithmetic number, because the mean of its divisors is an integer number (14126796).

Almost surely, 2^102072289 is an apocalyptic number.

It is an amenable number.

102072289 is a deficient number, since it is larger than the sum of its proper divisors (10942079).

102072289 is a wasteful number, since it uses less digits than its factorization.

102072289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138575.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 102072289 is about 10103.0831432786. The cubic root of 102072289 is about 467.3432251922.

The spelling of 102072289 in words is "one hundred two million, seventy-two thousand, two hundred eighty-nine".