144345740 has 72 divisors (see below), whose sum is σ = 380831136. Its totient is φ = 44985600.

The previous prime is 144345739. The next prime is 144345743. The reversal of 144345740 is 47543441.

It is a super-2 number, since 2×144345740² = 41671385312295200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 144345697 and 144345706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144345743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12680 + ... + 21200.

Almost surely, 2^144345740 is an apocalyptic number.

144345740 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 144345740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190415568).

144345740 is an abundant number, since it is smaller than the sum of its proper divisors (236485396).

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

144345740 is a wasteful number, since it uses less digits than its factorization.

144345740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559 (or 8546 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 144345740 is about 12014.3971966970. The cubic root of 144345740 is about 524.5674320481.

The spelling of 144345740 in words is "one hundred forty-four million, three hundred forty-five thousand, seven hundred forty".