145273312 has 12 divisors (see below), whose sum is σ = 286006896. Its totient is φ = 72636640.

The previous prime is 145273309. The next prime is 145273319. The reversal of 145273312 is 213372541.

It is a super-2 number, since 2×145273312² = 42208670358898688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145273319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269864 + ... + 2269927.

It is an arithmetic number, because the mean of its divisors is an integer number (23833908).

Almost surely, 2^145273312 is an apocalyptic number.

It is an amenable number.

145273312 is a deficient number, since it is larger than the sum of its proper divisors (140733584).

145273312 is an equidigital number, since it uses as much as digits as its factorization.

145273312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539801 (or 4539793 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 145273312 is about 12052.9378991182. The cubic root of 145273312 is about 525.6886648104.

The spelling of 145273312 in words is "one hundred forty-five million, two hundred seventy-three thousand, three hundred twelve".