144232770 has 128 divisors (see below), whose sum is σ = 407420928. Its totient is φ = 32313600.

The previous prime is 144232741. The next prime is 144232783. The reversal of 144232770 is 77232441.

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 63 ways as a sum of consecutive naturals, for example, 234984 + ... + 235596.

It is an arithmetic number, because the mean of its divisors is an integer number (3182976).

Almost surely, 2^144232770 is an apocalyptic number.

144232770 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 144232770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203710464).

144232770 is an abundant number, since it is smaller than the sum of its proper divisors (263188158).

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

144232770 is a wasteful number, since it uses less digits than its factorization.

144232770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

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

The square root of 144232770 is about 12009.6948337583. The cubic root of 144232770 is about 524.4305480886.

The spelling of 144232770 in words is "one hundred forty-four million, two hundred thirty-two thousand, seven hundred seventy".