145503980 has 96 divisors (see below), whose sum is σ = 334623744. Its totient is φ = 52994304.

The previous prime is 145503973. The next prime is 145504019. The reversal of 145503980 is 89305541.

145503980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 145503980.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1412609 + ... + 1412711.

It is an arithmetic number, because the mean of its divisors is an integer number (3485664).

Almost surely, 2^145503980 is an apocalyptic number.

145503980 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 145503980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167311872).

145503980 is an abundant number, since it is smaller than the sum of its proper divisors (189119764).

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

145503980 is a wasteful number, since it uses less digits than its factorization.

145503980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 145503980 is about 12062.5030569944. The cubic root of 145503980 is about 525.9667508271.

The spelling of 145503980 in words is "one hundred forty-five million, five hundred three thousand, nine hundred eighty".