145471904 has 24 divisors (see below), whose sum is σ = 301472640. Its totient is φ = 68907456.

The previous prime is 145471889. The next prime is 145471939. The reversal of 145471904 is 409174541.

145471904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 119024 + ... + 120239.

It is an arithmetic number, because the mean of its divisors is an integer number (12561360).

Almost surely, 2^145471904 is an apocalyptic number.

It is an amenable number.

145471904 is an abundant number, since it is smaller than the sum of its proper divisors (156000736).

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

145471904 is a wasteful number, since it uses less digits than its factorization.

145471904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239292 (or 239284 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 145471904 is about 12061.1734089184. The cubic root of 145471904 is about 525.9280986213.

The spelling of 145471904 in words is "one hundred forty-five million, four hundred seventy-one thousand, nine hundred four".