145652290 has 64 divisors (see below), whose sum is σ = 318931200. Its totient is φ = 46780416.

The previous prime is 145652267. The next prime is 145652317. The reversal of 145652290 is 92256541.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 128446 + ... + 129574.

It is an arithmetic number, because the mean of its divisors is an integer number (4983300).

Almost surely, 2^145652290 is an apocalyptic number.

145652290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145652290 is an abundant number, since it is smaller than the sum of its proper divisors (173278910).

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

145652290 is a wasteful number, since it uses less digits than its factorization.

145652290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 145652290 is about 12068.6490544717. The cubic root of 145652290 is about 526.1453934556.

The spelling of 145652290 in words is "one hundred forty-five million, six hundred fifty-two thousand, two hundred ninety".