145278068 has 12 divisors (see below), whose sum is σ = 273793380. Its totient is φ = 67051392.

The previous prime is 145278041. The next prime is 145278109. The reversal of 145278068 is 860872541.

It can be written as a sum of positive squares in 2 ways, for example, as 15272464 + 130005604 = 3908^2 + 11402^2 .

It is a super-2 number, since 2×145278068² = 42211434083625248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1396853 + ... + 1396956.

It is an arithmetic number, because the mean of its divisors is an integer number (22816115).

Almost surely, 2^145278068 is an apocalyptic number.

It is an amenable number.

145278068 is a deficient number, since it is larger than the sum of its proper divisors (128515312).

145278068 is a wasteful number, since it uses less digits than its factorization.

145278068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793826 (or 2793824 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 145278068 is about 12053.1351937992. The cubic root of 145278068 is about 525.6944014640.

The spelling of 145278068 in words is "one hundred forty-five million, two hundred seventy-eight thousand, sixty-eight".