103945512 has 64 divisors (see below), whose sum is σ = 293284800. Its totient is φ = 30410240.

The previous prime is 103945507. The next prime is 103945519. The reversal of 103945512 is 215549301.

It is a self number, because there is not a number n which added to its sum of digits gives 103945512.

It is not an unprimeable number, because it can be changed into a prime (103945519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868 + ... + 14444.

It is an arithmetic number, because the mean of its divisors is an integer number (4582575).

Almost surely, 2^103945512 is an apocalyptic number.

103945512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103945512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146642400).

103945512 is an abundant number, since it is smaller than the sum of its proper divisors (189339288).

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

103945512 is a wasteful number, since it uses less digits than its factorization.

103945512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13626 (or 13622 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 103945512 is about 10195.3671831867. The cubic root of 103945512 is about 470.1847952968.

The spelling of 103945512 in words is "one hundred three million, nine hundred forty-five thousand, five hundred twelve".