145887446 has 8 divisors (see below), whose sum is σ = 219352224. Its totient is φ = 72770040.

The previous prime is 145887419. The next prime is 145887451. The reversal of 145887446 is 644788541.

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

It is a self number, because there is not a number n which added to its sum of digits gives 145887446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85790 + ... + 87473.

It is an arithmetic number, because the mean of its divisors is an integer number (27419028).

Almost surely, 2^145887446 is an apocalyptic number.

145887446 is a deficient number, since it is larger than the sum of its proper divisors (73464778).

145887446 is a wasteful number, since it uses less digits than its factorization.

145887446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173686.

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

The square root of 145887446 is about 12078.3875579483. The cubic root of 145887446 is about 526.4283955751.

The spelling of 145887446 in words is "one hundred forty-five million, eight hundred eighty-seven thousand, four hundred forty-six".