143978228 has 6 divisors (see below), whose sum is σ = 251961906. Its totient is φ = 71989112.

The previous prime is 143978213. The next prime is 143978251. The reversal of 143978228 is 822879341.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 46403344 = 9878^2 + 6812^2 .

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, 17997275 + ... + 17997282.

It is an arithmetic number, because the mean of its divisors is an integer number (41993651).

Almost surely, 2^143978228 is an apocalyptic number.

It is an amenable number.

143978228 is a deficient number, since it is larger than the sum of its proper divisors (107983678).

143978228 is a wasteful number, since it uses less digits than its factorization.

143978228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35994561 (or 35994559 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 143978228 is about 11999.0927990411. The cubic root of 143978228 is about 524.1218614077.

The spelling of 143978228 in words is "one hundred forty-three million, nine hundred seventy-eight thousand, two hundred twenty-eight".