84247478 has 32 divisors (see below), whose sum is σ = 153446400. Its totient is φ = 33865344.

The previous prime is 84247477. The next prime is 84247519. The reversal of 84247478 is 87474248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84247477) 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, 113633 + ... + 114371.

It is an arithmetic number, because the mean of its divisors is an integer number (4795200).

Almost surely, 2^84247478 is an apocalyptic number.

84247478 is a deficient number, since it is larger than the sum of its proper divisors (69198922).

84247478 is a wasteful number, since it uses less digits than its factorization.

84247478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its digits is 401408, while the sum is 44.

The square root of 84247478 is about 9178.6424922207. The cubic root of 84247478 is about 438.3815854136.

The spelling of 84247478 in words is "eighty-four million, two hundred forty-seven thousand, four hundred seventy-eight".