145528290 has 48 divisors (see below), whose sum is σ = 379419768. Its totient is φ = 38700288.

The previous prime is 145528247. The next prime is 145528307. The reversal of 145528290 is 92825541.

145528290 is a `hidden beast` number, since 1 + 45 + 528 + 2 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 98783721 + 46744569 = 9939^2 + 6837^2 .

It is a nialpdrome in base 15.

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 23 ways as a sum of consecutive naturals, for example, 33694 + ... + 37766.

Almost surely, 2^145528290 is an apocalyptic number.

145528290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145528290 is an abundant number, since it is smaller than the sum of its proper divisors (233891478).

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

145528290 is a wasteful number, since it uses less digits than its factorization.

145528290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483 (or 4480 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 145528290 is about 12063.5106830475. The cubic root of 145528290 is about 525.9960410676.

The spelling of 145528290 in words is "one hundred forty-five million, five hundred twenty-eight thousand, two hundred ninety".