102288947 has 4 divisors (see below), whose sum is σ = 102975600. Its totient is φ = 101602296.

The previous prime is 102288943. The next prime is 102288961. The reversal of 102288947 is 749882201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749882201 = 6883 ⋅108947.

It is a cyclic number.

It is not a de Polignac number, because 102288947 - 2² = 102288943 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (102288943) by changing a digit.

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, 343103 + ... + 343400.

It is an arithmetic number, because the mean of its divisors is an integer number (25743900).

Almost surely, 2^102288947 is an apocalyptic number.

102288947 is a deficient number, since it is larger than the sum of its proper divisors (686653).

102288947 is an equidigital number, since it uses as much as digits as its factorization.

102288947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686652.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 102288947 is about 10113.7998299353. The cubic root of 102288947 is about 467.6736514477.

The spelling of 102288947 in words is "one hundred two million, two hundred eighty-eight thousand, nine hundred forty-seven".