145781470 has 8 divisors (see below), whose sum is σ = 262406664. Its totient is φ = 58312584.

The previous prime is 145781453. The next prime is 145781483. The reversal of 145781470 is 74187541.

145781470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289064 + ... + 7289083.

It is an arithmetic number, because the mean of its divisors is an integer number (32800833).

Almost surely, 2^145781470 is an apocalyptic number.

145781470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145781470 is a deficient number, since it is larger than the sum of its proper divisors (116625194).

145781470 is a wasteful number, since it uses less digits than its factorization.

145781470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578154.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 145781470 is about 12073.9997515322. Note that the first 3 decimals coincide. The cubic root of 145781470 is about 526.3008947943.

The spelling of 145781470 in words is "one hundred forty-five million, seven hundred eighty-one thousand, four hundred seventy".