28201079 has 8 divisors (see below), whose sum is σ = 30890160. Its totient is φ = 25626496.

The previous prime is 28201051. The next prime is 28201087. The reversal of 28201079 is 97010282.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28201079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201009) 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, 28109 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (3861270).

Almost surely, 2^28201079 is an apocalyptic number.

28201079 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28201079 is a deficient number, since it is larger than the sum of its proper divisors (2689081).

28201079 is a wasteful number, since it uses less digits than its factorization.

28201079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57249.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 28201079 is about 5310.4688116964. The cubic root of 28201079 is about 304.3840619952.

The spelling of 28201079 in words is "twenty-eight million, two hundred one thousand, seventy-nine".