145744446 has 8 divisors (see below), whose sum is σ = 291488904. Its totient is φ = 48581480.

The previous prime is 145744439. The next prime is 145744447. The reversal of 145744446 is 644447541.

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

145744446 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145744447) 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, 12145365 + ... + 12145376.

It is an arithmetic number, because the mean of its divisors is an integer number (36436113).

Almost surely, 2^145744446 is an apocalyptic number.

145744446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145744446 is a wasteful number, since it uses less digits than its factorization.

145744446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24290746.

The product of its digits is 215040, while the sum is 39.

The square root of 145744446 is about 12072.4664422810. The cubic root of 145744446 is about 526.2563362868.

The spelling of 145744446 in words is "one hundred forty-five million, seven hundred forty-four thousand, four hundred forty-six".