145191320 has 16 divisors (see below), whose sum is σ = 326680560. Its totient is φ = 58076512.

The previous prime is 145191287. The next prime is 145191323. The reversal of 145191320 is 23191541.

It is a self number, because there is not a number n which added to its sum of digits gives 145191320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145191323) 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 3 ways as a sum of consecutive naturals, for example, 1814852 + ... + 1814931.

It is an arithmetic number, because the mean of its divisors is an integer number (20417535).

Almost surely, 2^145191320 is an apocalyptic number.

145191320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145191320 is an abundant number, since it is smaller than the sum of its proper divisors (181489240).

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

145191320 is a wasteful number, since it uses less digits than its factorization.

145191320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629794 (or 3629790 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 145191320 is about 12049.5360906551. The cubic root of 145191320 is about 525.5897469479.

The spelling of 145191320 in words is "one hundred forty-five million, one hundred ninety-one thousand, three hundred twenty".