144028539 has 24 divisors (see below), whose sum is σ = 224976960. Its totient is φ = 88443648.

The previous prime is 144028513. The next prime is 144028559. The reversal of 144028539 is 935820441.

It is not a de Polignac number, because 144028539 - 2⁷ = 144028411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144028559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2824 + ... + 17205.

It is an arithmetic number, because the mean of its divisors is an integer number (9374040).

Almost surely, 2^144028539 is an apocalyptic number.

144028539 is a deficient number, since it is larger than the sum of its proper divisors (80948421).

144028539 is a wasteful number, since it uses less digits than its factorization.

144028539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20099 (or 20096 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 144028539 is about 12001.1890660884. The cubic root of 144028539 is about 524.1829031002.

The spelling of 144028539 in words is "one hundred forty-four million, twenty-eight thousand, five hundred thirty-nine".