103881978 has 24 divisors (see below), whose sum is σ = 225857268. Its totient is φ = 34507392.

The previous prime is 103881931. The next prime is 103881979. The reversal of 103881978 is 879188301.

It can be written as a sum of positive squares in 2 ways, for example, as 103367889 + 514089 = 10167^2 + 717^2 .

It is not an unprimeable number, because it can be changed into a prime (103881979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4575 + ... + 15122.

Almost surely, 2^103881978 is an apocalyptic number.

103881978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

103881978 is an abundant number, since it is smaller than the sum of its proper divisors (121975290).

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

103881978 is a wasteful number, since it uses less digits than its factorization.

103881978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19998 (or 19995 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 103881978 is about 10192.2508799578. The cubic root of 103881978 is about 470.0889796828.

The spelling of 103881978 in words is "one hundred three million, eight hundred eighty-one thousand, nine hundred seventy-eight".