144661620 has 24 divisors (see below), whose sum is σ = 405052704. Its totient is φ = 38576416.

The previous prime is 144661607. The next prime is 144661637. The reversal of 144661620 is 26166441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1205454 + ... + 1205573.

It is an arithmetic number, because the mean of its divisors is an integer number (16877196).

Almost surely, 2^144661620 is an apocalyptic number.

144661620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144661620 is an abundant number, since it is smaller than the sum of its proper divisors (260391084).

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

144661620 is a wasteful number, since it uses less digits than its factorization.

144661620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411039 (or 2411037 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 144661620 is about 12027.5359072422. The cubic root of 144661620 is about 524.9498001888.

The spelling of 144661620 in words is "one hundred forty-four million, six hundred sixty-one thousand, six hundred twenty".