145748220 has 48 divisors (see below), whose sum is σ = 410823168. Its totient is φ = 38606400.

The previous prime is 145748219. The next prime is 145748227. The reversal of 145748220 is 22847541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145748227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017 + ... + 17103.

It is an arithmetic number, because the mean of its divisors is an integer number (8558816).

Almost surely, 2^145748220 is an apocalyptic number.

145748220 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 145748220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205411584).

145748220 is an abundant number, since it is smaller than the sum of its proper divisors (265074948).

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

145748220 is a wasteful number, since it uses less digits than its factorization.

145748220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16250 (or 16248 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 145748220 is about 12072.6227473569. The cubic root of 145748220 is about 526.2608786538.

The spelling of 145748220 in words is "one hundred forty-five million, seven hundred forty-eight thousand, two hundred twenty".