103891520 has 28 divisors (see below), whose sum is σ = 247392444. Its totient is φ = 41556480.

The previous prime is 103891477. The next prime is 103891537. The reversal of 103891520 is 25198301.

It can be written as a sum of positive squares in 2 ways, for example, as 78570496 + 25321024 = 8864^2 + 5032^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162011 + ... + 162650.

Almost surely, 2^103891520 is an apocalyptic number.

103891520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103891520 is an abundant number, since it is smaller than the sum of its proper divisors (143500924).

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

103891520 is an equidigital number, since it uses as much as digits as its factorization.

103891520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324678 (or 324668 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 103891520 is about 10192.7189699314. The cubic root of 103891520 is about 470.1033724639.

The spelling of 103891520 in words is "one hundred three million, eight hundred ninety-one thousand, five hundred twenty".