28629143 has 4 divisors (see below), whose sum is σ = 30135960. Its totient is φ = 27122328.

The previous prime is 28629131. The next prime is 28629149. The reversal of 28629143 is 34192682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28629143 - 2⁶ = 28629079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28629149) 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, 753380 + ... + 753417.

It is an arithmetic number, because the mean of its divisors is an integer number (7533990).

Almost surely, 2^28629143 is an apocalyptic number.

28629143 is a deficient number, since it is larger than the sum of its proper divisors (1506817).

28629143 is a wasteful number, since it uses less digits than its factorization.

28629143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506816.

The product of its digits is 20736, while the sum is 35.

The square root of 28629143 is about 5350.6208051029. The cubic root of 28629143 is about 305.9164160052.

The spelling of 28629143 in words is "twenty-eight million, six hundred twenty-nine thousand, one hundred forty-three".