144257070 has 64 divisors (see below), whose sum is σ = 372672576. Its totient is φ = 35604480.

The previous prime is 144257059. The next prime is 144257093. The reversal of 144257070 is 70752441.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 28792 + ... + 33428.

It is an arithmetic number, because the mean of its divisors is an integer number (5823009).

Almost surely, 2^144257070 is an apocalyptic number.

144257070 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 144257070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186336288).

144257070 is an abundant number, since it is smaller than the sum of its proper divisors (228415506).

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

144257070 is a wasteful number, since it uses less digits than its factorization.

144257070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 144257070 is about 12010.7064738091. The cubic root of 144257070 is about 524.4599980458.

The spelling of 144257070 in words is "one hundred forty-four million, two hundred fifty-seven thousand, seventy".