84240436 has 24 divisors (see below), whose sum is σ = 171339840. Its totient is φ = 35490432.

The previous prime is 84240419. The next prime is 84240439. The reversal of 84240436 is 63404248.

It is a junction number, because it is equal to n+sod(n) for n = 84240398 and 84240407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84240439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23845 + ... + 27148.

It is an arithmetic number, because the mean of its divisors is an integer number (7139160).

Almost surely, 2^84240436 is an apocalyptic number.

It is an amenable number.

84240436 is an abundant number, since it is smaller than the sum of its proper divisors (87099404).

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

84240436 is a wasteful number, since it uses less digits than its factorization.

84240436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51063 (or 51061 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 84240436 is about 9178.2588762793. The cubic root of 84240436 is about 438.3693707289.

The spelling of 84240436 in words is "eighty-four million, two hundred forty thousand, four hundred thirty-six".