145442444 has 24 divisors (see below), whose sum is σ = 291271680. Its totient is φ = 62249616.

The previous prime is 145442443. The next prime is 145442459. The reversal of 145442444 is 444244541.

It is a self number, because there is not a number n which added to its sum of digits gives 145442444.

It is not an unprimeable number, because it can be changed into a prime (145442443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21029 + ... + 27075.

It is an arithmetic number, because the mean of its divisors is an integer number (12136320).

Almost surely, 2^145442444 is an apocalyptic number.

145442444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145442444 is an abundant number, since it is smaller than the sum of its proper divisors (145829236).

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

145442444 is a wasteful number, since it uses less digits than its factorization.

145442444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917 (or 6915 counting only the distinct ones).

The product of its digits is 40960, while the sum is 32.

The square root of 145442444 is about 12059.9520728733. The cubic root of 145442444 is about 525.8925937405.

Adding to 145442444 its reverse (444244541), we get a palindrome (589686985).

The spelling of 145442444 in words is "one hundred forty-five million, four hundred forty-two thousand, four hundred forty-four".