83278190 has 32 divisors (see below), whose sum is σ = 152915040. Its totient is φ = 32648704.

The previous prime is 83278171. The next prime is 83278199. The reversal of 83278190 is 9187238.

It is a super-2 number, since 2×83278190² = 13870513859352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83278199) 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 15 ways as a sum of consecutive naturals, for example, 121589 + ... + 122271.

It is an arithmetic number, because the mean of its divisors is an integer number (4778595).

Almost surely, 2^83278190 is an apocalyptic number.

83278190 is a deficient number, since it is larger than the sum of its proper divisors (69636850).

83278190 is a wasteful number, since it uses less digits than its factorization.

83278190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 83278190 is about 9125.6884671788. The cubic root of 83278190 is about 436.6938668318.

The spelling of 83278190 in words is "eighty-three million, two hundred seventy-eight thousand, one hundred ninety".