28004030 has 8 divisors (see below), whose sum is σ = 50407272. Its totient is φ = 11201608.

The previous prime is 28004023. The next prime is 28004047. The reversal of 28004030 is 3040082.

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

It is a Curzon number.

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, 1400192 + ... + 1400211.

It is an arithmetic number, because the mean of its divisors is an integer number (6300909).

Almost surely, 2^28004030 is an apocalyptic number.

28004030 is a deficient number, since it is larger than the sum of its proper divisors (22403242).

28004030 is a wasteful number, since it uses less digits than its factorization.

28004030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800410.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 28004030 is about 5291.8834076348. The cubic root of 28004030 is about 303.6734648858.

The spelling of 28004030 in words is "twenty-eight million, four thousand, thirty".