104391616 has 56 divisors (see below), whose sum is σ = 242295680. Its totient is φ = 43690752.

The previous prime is 104391613. The next prime is 104391647. The reversal of 104391616 is 616193401.

It is a tau number, because it is divible by the number of its divisors (56).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104391613) 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, 16555 + ... + 21973.

Almost surely, 2^104391616 is an apocalyptic number.

104391616 is a gapful number since it is divisible by the number (16) 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 104391616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121147840).

104391616 is an abundant number, since it is smaller than the sum of its proper divisors (137904064).

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

104391616 is an equidigital number, since it uses as much as digits as its factorization.

104391616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481 (or 5471 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 104391616 is about 10217.2215401253. The cubic root of 104391616 is about 470.8564676096.

The spelling of 104391616 in words is "one hundred four million, three hundred ninety-one thousand, six hundred sixteen".