145324440 has 48 divisors (see below), whose sum is σ = 472305600. Its totient is φ = 38753088.

The previous prime is 145324427. The next prime is 145324447. The reversal of 145324440 is 44423541.

It is a happy number.

It is a super-2 number, since 2×145324440² = 42238385722627200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145324447) 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 11 ways as a sum of consecutive naturals, for example, 201480 + ... + 202199.

It is an arithmetic number, because the mean of its divisors is an integer number (9839700).

Almost surely, 2^145324440 is an apocalyptic number.

145324440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145324440 is an abundant number, since it is smaller than the sum of its proper divisors (326981160).

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

145324440 is a wasteful number, since it uses less digits than its factorization.

145324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403696 (or 403689 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 145324440 is about 12055.0586891977. The cubic root of 145324440 is about 525.7503284824.

Adding to 145324440 its reverse (44423541), we get a palindrome (189747981).

The spelling of 145324440 in words is "one hundred forty-five million, three hundred twenty-four thousand, four hundred forty".