144428728730 has 32 divisors (see below), whose sum is σ = 305421314688. Its totient is φ = 48479572800.

The previous prime is 144428728693. The next prime is 144428728747. The reversal of 144428728730 is 37827824441.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50498126 + ... + 50500985.

It is an arithmetic number, because the mean of its divisors is an integer number (9544416084).

Almost surely, 2^144428728730 is an apocalyptic number.

144428728730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144428728730 is an abundant number, since it is smaller than the sum of its proper divisors (160992585958).

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

144428728730 is a wasteful number, since it uses less digits than its factorization.

144428728730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100999142.

The product of its (nonzero) digits is 2408448, while the sum is 50.

The spelling of 144428728730 in words is "one hundred forty-four billion, four hundred twenty-eight million, seven hundred twenty-eight thousand, seven hundred thirty".