144455864 has 32 divisors (see below), whose sum is σ = 311299200. Its totient is φ = 61559520.

The previous prime is 144455837. The next prime is 144455867. The reversal of 144455864 is 468554441.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144455867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2819 + ... + 17229.

It is an arithmetic number, because the mean of its divisors is an integer number (9728100).

Almost surely, 2^144455864 is an apocalyptic number.

144455864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

144455864 is an abundant number, since it is smaller than the sum of its proper divisors (166843336).

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

144455864 is a wasteful number, since it uses less digits than its factorization.

144455864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14603 (or 14599 counting only the distinct ones).

The product of its digits is 307200, while the sum is 41.

The square root of 144455864 is about 12018.9793243852. The cubic root of 144455864 is about 524.7007988277.

The spelling of 144455864 in words is "one hundred forty-four million, four hundred fifty-five thousand, eight hundred sixty-four".