145972808 has 8 divisors (see below), whose sum is σ = 273699030. Its totient is φ = 72986400.

The previous prime is 145972793. The next prime is 145972819. The reversal of 145972808 is 808279541.

It can be written as a sum of positive squares in only one way, i.e., 89151364 + 56821444 = 9442^2 + 7538^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 9123293 + ... + 9123308.

Almost surely, 2^145972808 is an apocalyptic number.

It is an amenable number.

145972808 is a deficient number, since it is larger than the sum of its proper divisors (127726222).

145972808 is a wasteful number, since it uses less digits than its factorization.

145972808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18246607 (or 18246603 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 145972808 is about 12081.9207082318. The cubic root of 145972808 is about 526.5310505562.

The spelling of 145972808 in words is "one hundred forty-five million, nine hundred seventy-two thousand, eight hundred eight".