145415244 has 24 divisors (see below), whose sum is σ = 365402800. Its totient is φ = 44743104.

The previous prime is 145415243. The next prime is 145415261. The reversal of 145415244 is 442514541.

It is a super-4 number, since 4×145415244⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (145415243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465919 + ... + 466230.

Almost surely, 2^145415244 is an apocalyptic number.

It is an amenable number.

145415244 is an abundant number, since it is smaller than the sum of its proper divisors (219987556).

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

145415244 is a wasteful number, since it uses less digits than its factorization.

145415244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932169 (or 932167 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 145415244 is about 12058.8243208034. The cubic root of 145415244 is about 525.8598083308.

Adding to 145415244 its reverse (442514541), we get a palindrome (587929785).

The spelling of 145415244 in words is "one hundred forty-five million, four hundred fifteen thousand, two hundred forty-four".