83420356 has 24 divisors (see below), whose sum is σ = 157590720. Its totient is φ = 38519712.

The previous prime is 83420353. The next prime is 83420371. The reversal of 83420356 is 65302438.

It is not an unprimeable number, because it can be changed into a prime (83420353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12966 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (6566280).

Almost surely, 2^83420356 is an apocalyptic number.

It is an amenable number.

83420356 is a deficient number, since it is larger than the sum of its proper divisors (74170364).

83420356 is a wasteful number, since it uses less digits than its factorization.

83420356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31323 (or 31321 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 83420356 is about 9133.4744757951. The cubic root of 83420356 is about 436.9422220774.

The spelling of 83420356 in words is "eighty-three million, four hundred twenty thousand, three hundred fifty-six".