144213992 has 32 divisors (see below), whose sum is σ = 308334600. Its totient is φ = 62644224.

The previous prime is 144213991. The next prime is 144214003. The reversal of 144213992 is 299312441.

It can be written as a sum of positive squares in 4 ways, for example, as 74891716 + 69322276 = 8654^2 + 8326^2 .

It is not an unprimeable number, because it can be changed into a prime (144213991) 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, 39017 + ... + 42552.

Almost surely, 2^144213992 is an apocalyptic number.

It is an amenable number.

144213992 is an abundant number, since it is smaller than the sum of its proper divisors (164120608).

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

144213992 is a wasteful number, since it uses less digits than its factorization.

144213992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81605 (or 81601 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 144213992 is about 12008.9130232507. The cubic root of 144213992 is about 524.4077881563.

The spelling of 144213992 in words is "one hundred forty-four million, two hundred thirteen thousand, nine hundred ninety-two".