144423620 has 24 divisors (see below), whose sum is σ = 330861888. Its totient is φ = 52517600.

The previous prime is 144423611. The next prime is 144423703. The reversal of 144423620 is 26324441.

144423620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 144423620.

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, 328016 + ... + 328455.

It is an arithmetic number, because the mean of its divisors is an integer number (13785912).

Almost surely, 2^144423620 is an apocalyptic number.

144423620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144423620 is an abundant number, since it is smaller than the sum of its proper divisors (186438268).

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

144423620 is a wasteful number, since it uses less digits than its factorization.

144423620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656491 (or 656489 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 144423620 is about 12017.6378710627. The cubic root of 144423620 is about 524.6617564263.

The spelling of 144423620 in words is "one hundred forty-four million, four hundred twenty-three thousand, six hundred twenty".