102780927 has 8 divisors (see below), whose sum is σ = 152268080. Its totient is φ = 68520600.

The previous prime is 102780917. The next prime is 102780943. The reversal of 102780927 is 729087201.

It is not a de Polignac number, because 102780927 - 2⁴ = 102780911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102780891 and 102780900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102780917) 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, 1903324 + ... + 1903377.

It is an arithmetic number, because the mean of its divisors is an integer number (19033510).

Almost surely, 2^102780927 is an apocalyptic number.

102780927 is a deficient number, since it is larger than the sum of its proper divisors (49487153).

102780927 is an equidigital number, since it uses as much as digits as its factorization.

102780927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806710 (or 3806704 counting only the distinct ones).

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

The square root of 102780927 is about 10138.0928679905. The cubic root of 102780927 is about 468.4222438420.

The spelling of 102780927 in words is "one hundred two million, seven hundred eighty thousand, nine hundred twenty-seven".