28069164 has 18 divisors (see below), whose sum is σ = 70952700. Its totient is φ = 9356376.

The previous prime is 28069163. The next prime is 28069183. The reversal of 28069164 is 46196082.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 779699 = 28069164 / (2 + 8 + 0 + 6 + 9 + 1 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (28069163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389814 + ... + 389885.

Almost surely, 2^28069164 is an apocalyptic number.

It is an amenable number.

28069164 is an abundant number, since it is smaller than the sum of its proper divisors (42883536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28069164 is a wasteful number, since it uses less digits than its factorization.

28069164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779709 (or 779704 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28069164 is about 5298.0339749760. The cubic root of 28069164 is about 303.9087185541.

The spelling of 28069164 in words is "twenty-eight million, sixty-nine thousand, one hundred sixty-four".