28470071 has 8 divisors (see below), whose sum is σ = 32571264. Its totient is φ = 24377400.

The previous prime is 28470049. The next prime is 28470137. The reversal of 28470071 is 17007482.

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

It is a cyclic number.

It is not a de Polignac number, because 28470071 - 2⁶ = 28470007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470041) 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, 8756 + ... + 11558.

It is an arithmetic number, because the mean of its divisors is an integer number (4071408).

Almost surely, 2^28470071 is an apocalyptic number.

28470071 is a deficient number, since it is larger than the sum of its proper divisors (4101193).

28470071 is a wasteful number, since it uses less digits than its factorization.

28470071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 28470071 is about 5335.7352820394. The cubic root of 28470071 is about 305.3487759659.

The spelling of 28470071 in words is "twenty-eight million, four hundred seventy thousand, seventy-one".