144200978 has 8 divisors (see below), whose sum is σ = 216993468. Its totient is φ = 71869824.

The previous prime is 144200971. The next prime is 144200981. The reversal of 144200978 is 879002441.

It can be written as a sum of positive squares in 2 ways, for example, as 141300769 + 2900209 = 11887^2 + 1703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (144200971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114551 + ... + 115802.

Almost surely, 2^144200978 is an apocalyptic number.

144200978 is a deficient number, since it is larger than the sum of its proper divisors (72792490).

144200978 is a wasteful number, since it uses less digits than its factorization.

144200978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230668.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 144200978 is about 12008.3711634842. The cubic root of 144200978 is about 524.3920133388.

The spelling of 144200978 in words is "one hundred forty-four million, two hundred thousand, nine hundred seventy-eight".