144667940 has 12 divisors (see below), whose sum is σ = 303802716. Its totient is φ = 57867168.

The previous prime is 144667903. The next prime is 144667949. The reversal of 144667940 is 49766441.

144667940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 54493924 + 90174016 = 7382^2 + 9496^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (144667949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616679 + ... + 3616718.

It is an arithmetic number, because the mean of its divisors is an integer number (25316893).

Almost surely, 2^144667940 is an apocalyptic number.

144667940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144667940 is an abundant number, since it is smaller than the sum of its proper divisors (159134776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144667940 is a wasteful number, since it uses less digits than its factorization.

144667940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7233406 (or 7233404 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 144667940 is about 12027.7986348292. The cubic root of 144667940 is about 524.9574447744.

The spelling of 144667940 in words is "one hundred forty-four million, six hundred sixty-seven thousand, nine hundred forty".