104405644 has 24 divisors (see below), whose sum is σ = 215548928. Its totient is φ = 43301520.

The previous prime is 104405603. The next prime is 104405647. The reversal of 104405644 is 446504401.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (104405647) 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, 59274 + ... + 61009.

Almost surely, 2^104405644 is an apocalyptic number.

104405644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

104405644 is an abundant number, since it is smaller than the sum of its proper divisors (111143284).

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

104405644 is a wasteful number, since it uses less digits than its factorization.

104405644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120325 (or 120323 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 104405644 is about 10217.9080050664. The cubic root of 104405644 is about 470.8775576771.

The spelling of 104405644 in words is "one hundred four million, four hundred five thousand, six hundred forty-four".