83820237 has 16 divisors (see below), whose sum is σ = 116688000. Its totient is φ = 53452224.

The previous prime is 83820227. The next prime is 83820239. The reversal of 83820237 is 73202838.

It is a happy number.

It is not a de Polignac number, because 83820237 - 2⁴ = 83820221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83820198 and 83820207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83820239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5064 + ... + 13902.

It is an arithmetic number, because the mean of its divisors is an integer number (7293000).

Almost surely, 2^83820237 is an apocalyptic number.

83820237 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

83820237 is a deficient number, since it is larger than the sum of its proper divisors (32867763).

83820237 is a wasteful number, since it uses less digits than its factorization.

83820237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 83820237 is about 9155.3392618734. The cubic root of 83820237 is about 437.6392799543.

The spelling of 83820237 in words is "eighty-three million, eight hundred twenty thousand, two hundred thirty-seven".