144694216 has 32 divisors (see below), whose sum is σ = 276281280. Its totient is φ = 71032000.

The previous prime is 144694213. The next prime is 144694243. The reversal of 144694216 is 612496441.

It is a super-2 number, since 2×144694216² = 41872832287709312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144694213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105165 + ... + 106531.

It is an arithmetic number, because the mean of its divisors is an integer number (8633790).

Almost surely, 2^144694216 is an apocalyptic number.

It is an amenable number.

144694216 is a deficient number, since it is larger than the sum of its proper divisors (131587064).

144694216 is a wasteful number, since it uses less digits than its factorization.

144694216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1601 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 144694216 is about 12028.8908881908. The cubic root of 144694216 is about 524.9892254780.

The spelling of 144694216 in words is "one hundred forty-four million, six hundred ninety-four thousand, two hundred sixteen".