145209308 has 24 divisors (see below), whose sum is σ = 271134864. Its totient is φ = 67808000.

The previous prime is 145209299. The next prime is 145209371. The reversal of 145209308 is 803902541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758 + ... + 17058.

It is an arithmetic number, because the mean of its divisors is an integer number (11297286).

Almost surely, 2^145209308 is an apocalyptic number.

It is an amenable number.

145209308 is a deficient number, since it is larger than the sum of its proper divisors (125925556).

145209308 is a wasteful number, since it uses less digits than its factorization.

145209308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16453 (or 16451 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 145209308 is about 12050.2824863154. The cubic root of 145209308 is about 525.6114514547.

The spelling of 145209308 in words is "one hundred forty-five million, two hundred nine thousand, three hundred eight".