144732720 has 160 divisors (see below), whose sum is σ = 496825344. Its totient is φ = 34560000.

The previous prime is 144732701. The next prime is 144732737. The reversal of 144732720 is 27237441.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192345 + ... + 193095.

Almost surely, 2^144732720 is an apocalyptic number.

144732720 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 144732720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248412672).

144732720 is an abundant number, since it is smaller than the sum of its proper divisors (352092624).

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

144732720 is a wasteful number, since it uses less digits than its factorization.

144732720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 144732720 is about 12030.4912617898. The cubic root of 144732720 is about 525.0357889435.

The spelling of 144732720 in words is "one hundred forty-four million, seven hundred thirty-two thousand, seven hundred twenty".