28673942 has 16 divisors (see below), whose sum is σ = 47017152. Its totient is φ = 13006920.

The previous prime is 28673929. The next prime is 28673947. The reversal of 28673942 is 24937682.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28673942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28673947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13133 + ... + 15159.

It is an arithmetic number, because the mean of its divisors is an integer number (2938572).

Almost surely, 2^28673942 is an apocalyptic number.

28673942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28673942 is a deficient number, since it is larger than the sum of its proper divisors (18343210).

28673942 is a wasteful number, since it uses less digits than its factorization.

28673942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683.

The product of its digits is 145152, while the sum is 41.

The square root of 28673942 is about 5354.8055053382. The cubic root of 28673942 is about 306.0758992668.

The spelling of 28673942 in words is "twenty-eight million, six hundred seventy-three thousand, nine hundred forty-two".