18079280 has 40 divisors (see below), whose sum is σ = 42674352. Its totient is φ = 7121664.

The previous prime is 18079249. The next prime is 18079283. The reversal of 18079280 is 8297081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 18079280.

It is not an unprimeable number, because it can be changed into a prime (18079283) 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, 3674 + ... + 7046.

Almost surely, 2^18079280 is an apocalyptic number.

18079280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18079280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21337176).

18079280 is an abundant number, since it is smaller than the sum of its proper divisors (24595072).

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

18079280 is a wasteful number, since it uses less digits than its factorization.

18079280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453 (or 3447 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 18079280 is about 4251.9736593728. The cubic root of 18079280 is about 262.4583395715.

The spelling of 18079280 in words is "eighteen million, seventy-nine thousand, two hundred eighty".