83278116 has 36 divisors (see below), whose sum is σ = 211411200.
Its totient is φ = 27640368.
The previous prime is 83278109. The next prime is 83278123. The reversal of 83278116 is 61187238.
It is an interprime number because it is at equal distance from previous prime (83278109) and next prime (83278123).
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3765 + ... + 13443.
Almost surely, 283278116 is an apocalyptic number.
It is an amenable number.
83278116 is an abundant number, since it is smaller than the sum of its proper divisors (128133084).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
83278116 is a wasteful number, since it uses less digits than its factorization.
83278116 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9928 (or 9923 counting only the distinct ones).
The product of its digits is 16128, while the sum is 36.
The square root of 83278116 is about 9125.6844126893.
The cubic root of 83278116 is about 436.6937374848.
The spelling of 83278116 in words is "eighty-three million, two hundred seventy-eight thousand, one hundred sixteen".