83428237 has 2 divisors, whose sum is σ = 83428238. Its totient is φ = 83428236.

The previous prime is 83428211. The next prime is 83428271. The reversal of 83428237 is 73282438.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68459076 + 14969161 = 8274^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 83428237 - 2⁷ = 83428109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83428196 and 83428205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83428277) 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 as a sum of consecutive naturals, namely, 41714118 + 41714119.

It is an arithmetic number, because the mean of its divisors is an integer number (41714119).

Almost surely, 2^83428237 is an apocalyptic number.

It is an amenable number.

83428237 is a deficient number, since it is larger than the sum of its proper divisors (1).

83428237 is an equidigital number, since it uses as much as digits as its factorization.

83428237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 83428237 is about 9133.9059005444. The cubic root of 83428237 is about 436.9559814417.

The spelling of 83428237 in words is "eighty-three million, four hundred twenty-eight thousand, two hundred thirty-seven".