83270421 has 12 divisors (see below), whose sum is σ = 129531948. Its totient is φ = 51243264.

The previous prime is 83270413. The next prime is 83270431. The reversal of 83270421 is 12407238.

It can be written as a sum of positive squares in 2 ways, for example, as 15800625 + 67469796 = 3975^2 + 8214^2 .

It is not a de Polignac number, because 83270421 - 2³ = 83270413 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83270431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355740 + ... + 355973.

It is an arithmetic number, because the mean of its divisors is an integer number (10794329).

Almost surely, 2^83270421 is an apocalyptic number.

It is an amenable number.

83270421 is a deficient number, since it is larger than the sum of its proper divisors (46261527).

83270421 is a wasteful number, since it uses less digits than its factorization.

83270421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711732 (or 711729 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 83270421 is about 9125.2627907365. The cubic root of 83270421 is about 436.6802867250.

Adding to 83270421 its reverse (12407238), we get a palindrome (95677659).

It can be divided in two parts, 832 and 70421, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 83270421 in words is "eighty-three million, two hundred seventy thousand, four hundred twenty-one".