145560640 has 56 divisors (see below), whose sum is σ = 352345752. Its totient is φ = 57262080.

The previous prime is 145560637. The next prime is 145560677. The reversal of 145560640 is 46065541.

145560640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 984064 + 144576576 = 992^2 + 12024^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15792 + ... + 23248.

Almost surely, 2^145560640 is an apocalyptic number.

145560640 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 145560640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176172876).

145560640 is an abundant number, since it is smaller than the sum of its proper divisors (206785112).

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

145560640 is an equidigital number, since it uses as much as digits as its factorization.

145560640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535 (or 7525 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 145560640 is about 12064.8514288407. The cubic root of 145560640 is about 526.0350133555.

The spelling of 145560640 in words is "one hundred forty-five million, five hundred sixty thousand, six hundred forty".