104780640 has 96 divisors (see below), whose sum is σ = 344445696. Its totient is φ = 26723840.

The previous prime is 104780603. The next prime is 104780653. The reversal of 104780640 is 46087401.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 104780598 and 104780607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6295 + ... + 15785.

It is an arithmetic number, because the mean of its divisors is an integer number (3587976).

Almost surely, 2^104780640 is an apocalyptic number.

104780640 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 104780640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172222848).

104780640 is an abundant number, since it is smaller than the sum of its proper divisors (239665056).

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

104780640 is a wasteful number, since it uses less digits than its factorization.

104780640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532 (or 9524 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 104780640 is about 10236.2414977373. The cubic root of 104780640 is about 471.4406377602.

The spelling of 104780640 in words is "one hundred four million, seven hundred eighty thousand, six hundred forty".