144673440 has 48 divisors (see below), whose sum is σ = 455722848. Its totient is φ = 38579456.

The previous prime is 144673439. The next prime is 144673453. The reversal of 144673440 is 44376441.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150222 + ... + 151181.

It is an arithmetic number, because the mean of its divisors is an integer number (9494226).

Almost surely, 2^144673440 is an apocalyptic number.

144673440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144673440 is an abundant number, since it is smaller than the sum of its proper divisors (311049408).

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

144673440 is a wasteful number, since it uses less digits than its factorization.

144673440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301421 (or 301413 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 144673440 is about 12028.0272696731. The cubic root of 144673440 is about 524.9640973181.

The spelling of 144673440 in words is "one hundred forty-four million, six hundred seventy-three thousand, four hundred forty".