83236387 has 6 divisors (see below), whose sum is σ = 90131892. Its totient is φ = 76833432.

The previous prime is 83236367. The next prime is 83236393. The reversal of 83236387 is 78363238.

It is not a de Polignac number, because 83236387 - 2¹⁹ = 82712099 is a prime.

It is a super-2 number, since 2×83236387² = 13856592241627538, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83236337) 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 5 ways as a sum of consecutive naturals, for example, 246093 + ... + 246430.

It is an arithmetic number, because the mean of its divisors is an integer number (15021982).

Almost surely, 2^83236387 is an apocalyptic number.

83236387 is a deficient number, since it is larger than the sum of its proper divisors (6895505).

83236387 is a wasteful number, since it uses less digits than its factorization.

83236387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492549 (or 492536 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 83236387 is about 9123.3977771442. The cubic root of 83236387 is about 436.6207857964.

The spelling of 83236387 in words is "eighty-three million, two hundred thirty-six thousand, three hundred eighty-seven".