83381436 has 18 divisors (see below), whose sum is σ = 210769832. Its totient is φ = 27793800.

The previous prime is 83381407. The next prime is 83381437. The reversal of 83381436 is 63418338.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2316151 = 83381436 / (8 + 3 + 3 + 8 + 1 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 83381436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83381437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1158040 + ... + 1158111.

Almost surely, 2^83381436 is an apocalyptic number.

It is an amenable number.

83381436 is an abundant number, since it is smaller than the sum of its proper divisors (127388396).

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

83381436 is a wasteful number, since it uses less digits than its factorization.

83381436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316161 (or 2316156 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 83381436 is about 9131.3436032163. The cubic root of 83381436 is about 436.8742593023.

The spelling of 83381436 in words is "eighty-three million, three hundred eighty-one thousand, four hundred thirty-six".