102271678 has 4 divisors (see below), whose sum is σ = 153407520. Its totient is φ = 51135838.

The previous prime is 102271651. The next prime is 102271679. The reversal of 102271678 is 876172201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876172201 = 5261 ⋅166541.

It is a super-2 number, since 2×102271678² = 20918992241871368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102271679) 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 as a sum of consecutive naturals, namely, 25567918 + ... + 25567921.

It is an arithmetic number, because the mean of its divisors is an integer number (38351880).

Almost surely, 2^102271678 is an apocalyptic number.

102271678 is a deficient number, since it is larger than the sum of its proper divisors (51135842).

102271678 is an equidigital number, since it uses as much as digits as its factorization.

102271678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51135841.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 102271678 is about 10112.9460593835. The cubic root of 102271678 is about 467.6473315273.

The spelling of 102271678 in words is "one hundred two million, two hundred seventy-one thousand, six hundred seventy-eight".