28783030 has 8 divisors (see below), whose sum is σ = 51809472. Its totient is φ = 11513208.

The previous prime is 28783019. The next prime is 28783031. The reversal of 28783030 is 3038782.

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 = 28782983 and 28783001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28783031) 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, 1439142 + ... + 1439161.

It is an arithmetic number, because the mean of its divisors is an integer number (6476184).

Almost surely, 2^28783030 is an apocalyptic number.

28783030 is a deficient number, since it is larger than the sum of its proper divisors (23026442).

28783030 is a wasteful number, since it uses less digits than its factorization.

28783030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878310.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 28783030 is about 5364.9818266235. The cubic root of 28783030 is about 306.4635561699.

The spelling of 28783030 in words is "twenty-eight million, seven hundred eighty-three thousand, thirty".