145748240 has 160 divisors (see below), whose sum is σ = 407116800. Its totient is φ = 47900160.

The previous prime is 145748227. The next prime is 145748261. The reversal of 145748240 is 42847541.

It is a self number, because there is not a number n which added to its sum of digits gives 145748240.

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 31 ways as a sum of consecutive naturals, for example, 384371 + ... + 384749.

It is an arithmetic number, because the mean of its divisors is an integer number (2544480).

Almost surely, 2^145748240 is an apocalyptic number.

145748240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145748240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203558400).

145748240 is an abundant number, since it is smaller than the sum of its proper divisors (261368560).

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

145748240 is a wasteful number, since it uses less digits than its factorization.

145748240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 145748240 is about 12072.6235756773. The cubic root of 145748240 is about 526.2609027255.

The spelling of 145748240 in words is "one hundred forty-five million, seven hundred forty-eight thousand, two hundred forty".