103278138 has 16 divisors (see below), whose sum is σ = 206656320. Its totient is φ = 34409376.

The previous prime is 103278127. The next prime is 103278157. The reversal of 103278138 is 831872301.

It is a junction number, because it is equal to n+sod(n) for n = 103278099 and 103278108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20331 + ... + 24897.

It is an arithmetic number, because the mean of its divisors is an integer number (12916020).

Almost surely, 2^103278138 is an apocalyptic number.

103278138 is an abundant number, since it is smaller than the sum of its proper divisors (103378182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103278138 is a wasteful number, since it uses less digits than its factorization.

103278138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 103278138 is about 10162.5852025949. The cubic root of 103278138 is about 469.1763725184.

The spelling of 103278138 in words is "one hundred three million, two hundred seventy-eight thousand, one hundred thirty-eight".