143734428 has 18 divisors (see below), whose sum is σ = 363328784. Its totient is φ = 47911464.

The previous prime is 143734421. The next prime is 143734441. The reversal of 143734428 is 824437341.

143734428 is a `hidden beast` number, since 143 + 73 + 442 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3992623 = 143734428 / (1 + 4 + 3 + 7 + 3 + 4 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 143734392 and 143734401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143734421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1996276 + ... + 1996347.

Almost surely, 2^143734428 is an apocalyptic number.

143734428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

143734428 is an abundant number, since it is smaller than the sum of its proper divisors (219594356).

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

143734428 is a wasteful number, since it uses less digits than its factorization.

143734428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992633 (or 3992628 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 143734428 is about 11988.9293934029. The cubic root of 143734428 is about 523.8258603993.

The spelling of 143734428 in words is "one hundred forty-three million, seven hundred thirty-four thousand, four hundred twenty-eight".