103987128 has 32 divisors (see below), whose sum is σ = 297106560. Its totient is φ = 29710560.

The previous prime is 103987123. The next prime is 103987153. The reversal of 103987128 is 821789301.

It is a super-3 number, since 3×103987128³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103987123) 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, 309318 + ... + 309653.

It is an arithmetic number, because the mean of its divisors is an integer number (9284580).

Almost surely, 2^103987128 is an apocalyptic number.

It is an amenable number.

103987128 is an abundant number, since it is smaller than the sum of its proper divisors (193119432).

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

103987128 is a wasteful number, since it uses less digits than its factorization.

103987128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618987 (or 618983 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 103987128 is about 10197.4079059337. The cubic root of 103987128 is about 470.2475352180.

The spelling of 103987128 in words is "one hundred three million, nine hundred eighty-seven thousand, one hundred twenty-eight".