144215822 has 4 divisors (see below), whose sum is σ = 216323736. Its totient is φ = 72107910.

The previous prime is 144215803. The next prime is 144215831. The reversal of 144215822 is 228512441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 228512441 = 239 ⋅956119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36053954 + ... + 36053957.

It is an arithmetic number, because the mean of its divisors is an integer number (54080934).

Almost surely, 2^144215822 is an apocalyptic number.

144215822 is a deficient number, since it is larger than the sum of its proper divisors (72107914).

144215822 is an equidigital number, since it uses as much as digits as its factorization.

144215822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72107913.

The product of its digits is 5120, while the sum is 29.

The square root of 144215822 is about 12008.9892164162. The cubic root of 144215822 is about 524.4100063003.

The spelling of 144215822 in words is "one hundred forty-four million, two hundred fifteen thousand, eight hundred twenty-two".