104202640 has 80 divisors (see below), whose sum is σ = 249644736. Its totient is φ = 40435200.

The previous prime is 104202629. The next prime is 104202641. The reversal of 104202640 is 46202401.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (104202641) 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, 639199 + ... + 639361.

Almost surely, 2^104202640 is an apocalyptic number.

104202640 is a gapful number since it is divisible by the number (10) 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 104202640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124822368).

104202640 is an abundant number, since it is smaller than the sum of its proper divisors (145442096).

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

104202640 is a wasteful number, since it uses less digits than its factorization.

104202640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 104202640 is about 10207.9694356909. The cubic root of 104202640 is about 470.5721717311.

The spelling of 104202640 in words is "one hundred four million, two hundred two thousand, six hundred forty".