144931806 has 24 divisors (see below), whose sum is σ = 315653520. Its totient is φ = 48059136.

The previous prime is 144931793. The next prime is 144931819. The reversal of 144931806 is 608139441.

It is an interprime number because it is at equal distance from previous prime (144931793) and next prime (144931819).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17386 + ... + 24333.

It is an arithmetic number, because the mean of its divisors is an integer number (13152230).

Almost surely, 2^144931806 is an apocalyptic number.

144931806 is an abundant number, since it is smaller than the sum of its proper divisors (170721714).

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

144931806 is a wasteful number, since it uses less digits than its factorization.

144931806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41920 (or 41917 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 144931806 is about 12038.7626440594. The cubic root of 144931806 is about 525.2764149849.

The spelling of 144931806 in words is "one hundred forty-four million, nine hundred thirty-one thousand, eight hundred six".