143147268 has 72 divisors (see below), whose sum is σ = 396754176. Its totient is φ = 43156800.

The previous prime is 143147231. The next prime is 143147287. The reversal of 143147268 is 862741341.

It is a super-2 number, since 2×143147268² = 40982280671727648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87498 + ... + 89118.

Almost surely, 2^143147268 is an apocalyptic number.

143147268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143147268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198377088).

143147268 is an abundant number, since it is smaller than the sum of its proper divisors (253606908).

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

143147268 is a wasteful number, since it uses less digits than its factorization.

143147268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865 (or 1860 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 143147268 is about 11964.4167429925. The cubic root of 143147268 is about 523.1116048094. Note that the first 3 decimals are identical.

The spelling of 143147268 in words is "one hundred forty-three million, one hundred forty-seven thousand, two hundred sixty-eight".