144572638 has 24 divisors (see below), whose sum is σ = 252921312. Its totient is φ = 61798464.

The previous prime is 144572599. The next prime is 144572639. The reversal of 144572638 is 836275441.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 144572638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144572639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40731 + ... + 44137.

It is an arithmetic number, because the mean of its divisors is an integer number (10538388).

Almost surely, 2^144572638 is an apocalyptic number.

144572638 is a deficient number, since it is larger than the sum of its proper divisors (108348674).

144572638 is a wasteful number, since it uses less digits than its factorization.

144572638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3849 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 144572638 is about 12023.8362430632. The cubic root of 144572638 is about 524.8421451342.

The spelling of 144572638 in words is "one hundred forty-four million, five hundred seventy-two thousand, six hundred thirty-eight".