145447688 has 16 divisors (see below), whose sum is σ = 277860780. Its totient is φ = 71351488.

The previous prime is 145447681. The next prime is 145447711. The reversal of 145447688 is 886744541.

It can be written as a sum of positive squares in 2 ways, for example, as 125395204 + 20052484 = 11198^2 + 4478^2 .

It is not an unprimeable number, because it can be changed into a prime (145447681) 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, 171095 + ... + 171942.

Almost surely, 2^145447688 is an apocalyptic number.

It is an amenable number.

145447688 is a deficient number, since it is larger than the sum of its proper divisors (132413092).

145447688 is a wasteful number, since it uses less digits than its factorization.

145447688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343096 (or 343092 counting only the distinct ones).

The product of its digits is 860160, while the sum is 47.

The square root of 145447688 is about 12060.1694847129. The cubic root of 145447688 is about 525.8989141047.

The spelling of 145447688 in words is "one hundred forty-five million, four hundred forty-seven thousand, six hundred eighty-eight".