144622656 has 42 divisors (see below), whose sum is σ = 414536382. Its totient is φ = 48207360.

The previous prime is 144622633. The next prime is 144622663. The reversal of 144622656 is 656226441.

It can be written as a sum of positive squares in only one way, i.e., 138862656 + 5760000 = 11784^2 + 2400^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 144622656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124965 + ... + 126116.

Almost surely, 2^144622656 is an apocalyptic number.

144622656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

144622656 is an abundant number, since it is smaller than the sum of its proper divisors (269913726).

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

144622656 is a wasteful number, since it uses less digits than its factorization.

144622656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251099 (or 251086 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 144622656 is about 12025.9160150069. The cubic root of 144622656 is about 524.9026649484.

The spelling of 144622656 in words is "one hundred forty-four million, six hundred twenty-two thousand, six hundred fifty-six".