79428 has 12 divisors (see below), whose sum is σ = 185360. Its totient is φ = 26472.

The previous prime is 79427. The next prime is 79433. The reversal of 79428 is 82497.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 79395 and 79404.

It is not an unprimeable number, because it can be changed into a prime (79423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3298 + ... + 3321.

2⁷⁹⁴²⁸ is an apocalyptic number.

It is an amenable number.

79428 is an abundant number, since it is smaller than the sum of its proper divisors (105932).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92680).

79428 is a wasteful number, since it uses less digits than its factorization.

79428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626 (or 6624 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 79428 is about 281.8297358335. The cubic root of 79428 is about 42.9857533478.

It can be divided in two parts, 7942 and 8, that multiplied together give a palindrome (63536).

The spelling of 79428 in words is "seventy-nine thousand, four hundred twenty-eight".