84207424 has 28 divisors (see below), whose sum is σ = 190971424. Its totient is φ = 36088704.

The previous prime is 84207419. The next prime is 84207427. The reversal of 84207424 is 42470248.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84207427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93534 + ... + 94429.

It is an arithmetic number, because the mean of its divisors is an integer number (6820408).

Almost surely, 2^84207424 is an apocalyptic number.

It is an amenable number.

84207424 is an abundant number, since it is smaller than the sum of its proper divisors (106764000).

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

84207424 is a wasteful number, since it uses less digits than its factorization.

84207424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187982 (or 187972 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 84207424 is about 9176.4603197529. The cubic root of 84207424 is about 438.3121007641.

The spelling of 84207424 in words is "eighty-four million, two hundred seven thousand, four hundred twenty-four".