104451440 has 20 divisors (see below), whose sum is σ = 242849784. Its totient is φ = 41780544.

The previous prime is 104451421. The next prime is 104451449. The reversal of 104451440 is 44154401.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104451449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652742 + ... + 652901.

Almost surely, 2^104451440 is an apocalyptic number.

104451440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104451440 is an abundant number, since it is smaller than the sum of its proper divisors (138398344).

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

104451440 is a wasteful number, since it uses less digits than its factorization.

104451440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305656 (or 1305650 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 104451440 is about 10220.1487269022. The cubic root of 104451440 is about 470.9463954514.

The spelling of 104451440 in words is "one hundred four million, four hundred fifty-one thousand, four hundred forty".