143997772 has 24 divisors (see below), whose sum is σ = 254772000. Its totient is φ = 71210496.

The previous prime is 143997703. The next prime is 143997839. The reversal of 143997772 is 277799341.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213628 + ... + 214300.

It is an arithmetic number, because the mean of its divisors is an integer number (10615500).

Almost surely, 2^143997772 is an apocalyptic number.

It is an amenable number.

143997772 is a deficient number, since it is larger than the sum of its proper divisors (110774228).

143997772 is a wasteful number, since it uses less digits than its factorization.

143997772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1183 counting only the distinct ones).

The product of its digits is 666792, while the sum is 49.

The square root of 143997772 is about 11999.9071663076. The cubic root of 143997772 is about 524.1455755816.

The spelling of 143997772 in words is "one hundred forty-three million, nine hundred ninety-seven thousand, seven hundred seventy-two".