28933142 has 8 divisors (see below), whose sum is σ = 49599696. Its totient is φ = 12399912.

The previous prime is 28933129. The next prime is 28933169. The reversal of 28933142 is 24133982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28933099 and 28933108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033313 + ... + 1033340.

It is an arithmetic number, because the mean of its divisors is an integer number (6199962).

Almost surely, 2^28933142 is an apocalyptic number.

28933142 is a deficient number, since it is larger than the sum of its proper divisors (20666554).

28933142 is a wasteful number, since it uses less digits than its factorization.

28933142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066662.

The product of its digits is 10368, while the sum is 32.

The square root of 28933142 is about 5378.9536157137. The cubic root of 28933142 is about 306.9953986444.

The spelling of 28933142 in words is "twenty-eight million, nine hundred thirty-three thousand, one hundred forty-two".