83278507 has 8 divisors (see below), whose sum is σ = 90508880. Its totient is φ = 76165920.

The previous prime is 83278499. The next prime is 83278523. The reversal of 83278507 is 70587238.

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

It is a cyclic number.

It is not a de Polignac number, because 83278507 - 2³ = 83278499 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83278507.

It is not an unprimeable number, because it can be changed into a prime (83278907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27969 + ... + 30802.

It is an arithmetic number, because the mean of its divisors is an integer number (11313610).

Almost surely, 2^83278507 is an apocalyptic number.

83278507 is a deficient number, since it is larger than the sum of its proper divisors (7230373).

83278507 is a wasteful number, since it uses less digits than its factorization.

83278507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58893.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 83278507 is about 9125.7058357148. The cubic root of 83278507 is about 436.6944209256.

The spelling of 83278507 in words is "eighty-three million, two hundred seventy-eight thousand, five hundred seven".