144220372 has 6 divisors (see below), whose sum is σ = 252385658. Its totient is φ = 72110184.

The previous prime is 144220369. The next prime is 144220387. The reversal of 144220372 is 273022441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107205316 + 37015056 = 10354^2 + 6084^2 .

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, 18027543 + ... + 18027550.

Almost surely, 2^144220372 is an apocalyptic number.

It is an amenable number.

144220372 is a deficient number, since it is larger than the sum of its proper divisors (108165286).

144220372 is a wasteful number, since it uses less digits than its factorization.

144220372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36055097 (or 36055095 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 144220372 is about 12009.1786563445. The cubic root of 144220372 is about 524.4155212764.

The spelling of 144220372 in words is "one hundred forty-four million, two hundred twenty thousand, three hundred seventy-two".