144749780 has 24 divisors (see below), whose sum is σ = 347399808. Its totient is φ = 49628448.

The previous prime is 144749749. The next prime is 144749783. The reversal of 144749780 is 87947441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144749783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516824 + ... + 517103.

It is an arithmetic number, because the mean of its divisors is an integer number (14474992).

Almost surely, 2^144749780 is an apocalyptic number.

144749780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144749780 is an abundant number, since it is smaller than the sum of its proper divisors (202650028).

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

144749780 is a wasteful number, since it uses less digits than its factorization.

144749780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033943 (or 1033941 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 144749780 is about 12031.2002726245. The cubic root of 144749780 is about 525.0564172175.

The spelling of 144749780 in words is "one hundred forty-four million, seven hundred forty-nine thousand, seven hundred eighty".