100471440 has 40 divisors (see below), whose sum is σ = 311462208. Its totient is φ = 26792320.

The previous prime is 100471439. The next prime is 100471451. The reversal of 100471440 is 44174001.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209076 + ... + 209555.

Almost surely, 2^100471440 is an apocalyptic number.

100471440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100471440 is an abundant number, since it is smaller than the sum of its proper divisors (210990768).

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

100471440 is a wasteful number, since it uses less digits than its factorization.

100471440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418647 (or 418641 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 100471440 is about 10023.5442833361. The cubic root of 100471440 is about 464.8871503234.

The spelling of 100471440 in words is "one hundred million, four hundred seventy-one thousand, four hundred forty".