144206730 has 80 divisors (see below), whose sum is σ = 400333824. Its totient is φ = 37208160.

The previous prime is 144206707. The next prime is 144206731. The reversal of 144206730 is 37602441.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 144206694 and 144206703.

It is not an unprimeable number, because it can be changed into a prime (144206731) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22239 + ... + 27981.

Almost surely, 2^144206730 is an apocalyptic number.

144206730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 144206730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200166912).

144206730 is an abundant number, since it is smaller than the sum of its proper divisors (256127094).

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

144206730 is a wasteful number, since it uses less digits than its factorization.

144206730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793 (or 5784 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 144206730 is about 12008.6106606884. The cubic root of 144206730 is about 524.3989856973.

The spelling of 144206730 in words is "one hundred forty-four million, two hundred six thousand, seven hundred thirty".