144570640 has 40 divisors (see below), whose sum is σ = 350745408. Its totient is φ = 55313280.

The previous prime is 144570619. The next prime is 144570653. The reversal of 144570640 is 46075441.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37446 + ... + 41125.

Almost surely, 2^144570640 is an apocalyptic number.

144570640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144570640 is an abundant number, since it is smaller than the sum of its proper divisors (206174768).

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

144570640 is a wasteful number, since it uses less digits than its factorization.

144570640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78607 (or 78601 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 144570640 is about 12023.7531578122. The cubic root of 144570640 is about 524.8397273428.

The spelling of 144570640 in words is "one hundred forty-four million, five hundred seventy thousand, six hundred forty".