145270144 has 16 divisors (see below), whose sum is σ = 289405620.
Its totient is φ = 72635008.
The previous prime is 145270133. The next prime is 145270159. The reversal of 145270144 is 441072541.
It is a tau number, because it is divible by the number of its divisors (16).
It is a super-2 number, since 2×1452701442 = 42206829475561472, which contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567334 + ... + 567589.
Almost surely, 2145270144 is an apocalyptic number.
It is an amenable number.
145270144 is a deficient number, since it is larger than the sum of its proper divisors (144135476).
145270144 is an equidigital number, since it uses as much as digits as its factorization.
145270144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1134937 (or 1134925 counting only the distinct ones).
The product of its (nonzero) digits is 4480, while the sum is 28.
The square root of 145270144 is about 12052.8064781610.
The cubic root of 145270144 is about 525.6848435217.
The spelling of 145270144 in words is "one hundred forty-five million, two hundred seventy thousand, one hundred forty-four".