144452620 has 48 divisors (see below), whose sum is σ = 333664128. Its totient is φ = 52197120.

The previous prime is 144452617. The next prime is 144452639. The reversal of 144452620 is 26254441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6310 + ... + 18130.

It is an arithmetic number, because the mean of its divisors is an integer number (6951336).

Almost surely, 2^144452620 is an apocalyptic number.

144452620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144452620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166832064).

144452620 is an abundant number, since it is smaller than the sum of its proper divisors (189211508).

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

144452620 is a wasteful number, since it uses less digits than its factorization.

144452620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11890 (or 11888 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 144452620 is about 12018.8443704043. The cubic root of 144452620 is about 524.6968711179.

The spelling of 144452620 in words is "one hundred forty-four million, four hundred fifty-two thousand, six hundred twenty".