145646446 has 32 divisors (see below), whose sum is σ = 254119680. Its totient is φ = 61872000.

The previous prime is 145646441. The next prime is 145646483. The reversal of 145646446 is 644646541.

It is a junction number, because it is equal to n+sod(n) for n = 145646399 and 145646408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145646441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55185 + ... + 57763.

It is an arithmetic number, because the mean of its divisors is an integer number (7941240).

Almost surely, 2^145646446 is an apocalyptic number.

145646446 is a deficient number, since it is larger than the sum of its proper divisors (108473234).

145646446 is a wasteful number, since it uses less digits than its factorization.

145646446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its digits is 276480, while the sum is 40.

The square root of 145646446 is about 12068.4069371231. The cubic root of 145646446 is about 526.1383565259.

The spelling of 145646446 in words is "one hundred forty-five million, six hundred forty-six thousand, four hundred forty-six".