144858840 has 128 divisors (see below), whose sum is σ = 499115520. Its totient is φ = 32947200.

The previous prime is 144858829. The next prime is 144858893. The reversal of 144858840 is 48858441.

It is a super-2 number, since 2×144858840² = 41968167052291200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 144858792 and 144858801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277780 + ... + 278300.

It is an arithmetic number, because the mean of its divisors is an integer number (3899340).

Almost surely, 2^144858840 is an apocalyptic number.

144858840 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 144858840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249557760).

144858840 is an abundant number, since it is smaller than the sum of its proper divisors (354256680).

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

144858840 is a wasteful number, since it uses less digits than its factorization.

144858840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 42.

The square root of 144858840 is about 12035.7318015981. The cubic root of 144858840 is about 525.1882499512.

The spelling of 144858840 in words is "one hundred forty-four million, eight hundred fifty-eight thousand, eight hundred forty".