145188980 has 12 divisors (see below), whose sum is σ = 304896900. Its totient is φ = 58075584.

The previous prime is 145188971. The next prime is 145188997. The reversal of 145188980 is 89881541.

It can be written as a sum of positive squares in 2 ways, for example, as 56490256 + 88698724 = 7516^2 + 9418^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3629705 + ... + 3629744.

It is an arithmetic number, because the mean of its divisors is an integer number (25408075).

Almost surely, 2^145188980 is an apocalyptic number.

145188980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145188980 is an abundant number, since it is smaller than the sum of its proper divisors (159707920).

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

145188980 is a wasteful number, since it uses less digits than its factorization.

145188980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7259458 (or 7259456 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 145188980 is about 12049.4389910900. The cubic root of 145188980 is about 525.5869233480.

The spelling of 145188980 in words is "one hundred forty-five million, one hundred eighty-eight thousand, nine hundred eighty".