28070769 has 8 divisors (see below), whose sum is σ = 37476160. Its totient is φ = 18689616.

The previous prime is 28070767. The next prime is 28070813. The reversal of 28070769 is 96707082.

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

It is not a de Polignac number, because 28070769 - 2¹ = 28070767 is a prime.

It is a super-2 number, since 2×28070769² = 1575936144502722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28070767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3157 + ... + 8130.

It is an arithmetic number, because the mean of its divisors is an integer number (4684520).

Almost surely, 2^28070769 is an apocalyptic number.

It is an amenable number.

28070769 is a deficient number, since it is larger than the sum of its proper divisors (9405391).

28070769 is a wasteful number, since it uses less digits than its factorization.

28070769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12119.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 28070769 is about 5298.1854440931. The cubic root of 28070769 is about 303.9145109627.

The spelling of 28070769 in words is "twenty-eight million, seventy thousand, seven hundred sixty-nine".