28000046 has 8 divisors (see below), whose sum is σ = 43135320. Its totient is φ = 13621608.

The previous prime is 28000031. The next prime is 28000061. The reversal of 28000046 is 64000082.

It is an interprime number because it is at equal distance from previous prime (28000031) and next prime (28000061).

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27999991 and 28000027.

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, 189116 + ... + 189263.

It is an arithmetic number, because the mean of its divisors is an integer number (5391915).

Almost surely, 2^28000046 is an apocalyptic number.

28000046 is a deficient number, since it is larger than the sum of its proper divisors (15135274).

28000046 is a wasteful number, since it uses less digits than its factorization.

28000046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378418.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 28000046 is about 5291.5069687188. The cubic root of 28000046 is about 303.6590634769.

The spelling of 28000046 in words is "twenty-eight million, forty-six", and thus it is an aban number and an uban number.