83157830 has 32 divisors (see below), whose sum is σ = 172597824. Its totient is φ = 28256256.

The previous prime is 83157821. The next prime is 83157839. The reversal of 83157830 is 3875138.

It is an interprime number because it is at equal distance from previous prime (83157821) and next prime (83157839).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83157839) 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, 2654 + ... + 13166.

It is an arithmetic number, because the mean of its divisors is an integer number (5393682).

Almost surely, 2^83157830 is an apocalyptic number.

83157830 is an abundant number, since it is smaller than the sum of its proper divisors (89439994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83157830 is a wasteful number, since it uses less digits than its factorization.

83157830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10640.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 83157830 is about 9119.0915117680. The cubic root of 83157830 is about 436.4833842888.

The spelling of 83157830 in words is "eighty-three million, one hundred fifty-seven thousand, eight hundred thirty".