83280072 has 16 divisors (see below), whose sum is σ = 208200240. Its totient is φ = 27760016.

The previous prime is 83280023. The next prime is 83280073. The reversal of 83280072 is 27008238.

It is not an unprimeable number, because it can be changed into a prime (83280073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734978 + ... + 1735025.

It is an arithmetic number, because the mean of its divisors is an integer number (13012515).

Almost surely, 2^83280072 is an apocalyptic number.

It is an amenable number.

83280072 is an abundant number, since it is smaller than the sum of its proper divisors (124920168).

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

83280072 is a wasteful number, since it uses less digits than its factorization.

83280072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470012 (or 3470008 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 83280072 is about 9125.7915821040. The cubic root of 83280072 is about 436.6971564153.

The spelling of 83280072 in words is "eighty-three million, two hundred eighty thousand, seventy-two".