145730320 has 40 divisors (see below), whose sum is σ = 339371136. Its totient is φ = 58197888.

The previous prime is 145730303. The next prime is 145730357. The reversal of 145730320 is 23037541.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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, 69609 + ... + 71671.

Almost surely, 2^145730320 is an apocalyptic number.

145730320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145730320 is an abundant number, since it is smaller than the sum of its proper divisors (193640816).

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

145730320 is a wasteful number, since it uses less digits than its factorization.

145730320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959 (or 2953 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 145730320 is about 12071.8813778135. The cubic root of 145730320 is about 526.2393336099.

Adding to 145730320 its reverse (23037541), we get a palindrome (168767861).

The spelling of 145730320 in words is "one hundred forty-five million, seven hundred thirty thousand, three hundred twenty".