144670320 has 80 divisors (see below), whose sum is σ = 498316320. Its totient is φ = 38578176.

The previous prime is 144670307. The next prime is 144670327. The reversal of 144670320 is 23076441.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144670327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31329 + ... + 35648.

It is an arithmetic number, because the mean of its divisors is an integer number (6228954).

Almost surely, 2^144670320 is an apocalyptic number.

144670320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144670320 is an abundant number, since it is smaller than the sum of its proper divisors (353646000).

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

144670320 is a wasteful number, since it uses less digits than its factorization.

144670320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66999 (or 66987 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 144670320 is about 12027.8975718951. The cubic root of 144670320 is about 524.9603235322.

The spelling of 144670320 in words is "one hundred forty-four million, six hundred seventy thousand, three hundred twenty".