145893140 has 24 divisors (see below), whose sum is σ = 319697280. Its totient is φ = 55819808.

The previous prime is 145893119. The next prime is 145893157. The reversal of 145893140 is 41398541.

It is a self number, because there is not a number n which added to its sum of digits gives 145893140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158120 + ... + 159039.

It is an arithmetic number, because the mean of its divisors is an integer number (13320720).

Almost surely, 2^145893140 is an apocalyptic number.

145893140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145893140 is an abundant number, since it is smaller than the sum of its proper divisors (173804140).

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

145893140 is a wasteful number, since it uses less digits than its factorization.

145893140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317191 (or 317189 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 145893140 is about 12078.6232659190. The cubic root of 145893140 is about 526.4352443351.

The spelling of 145893140 in words is "one hundred forty-five million, eight hundred ninety-three thousand, one hundred forty".