84202378 has 8 divisors (see below), whose sum is σ = 136019268. Its totient is φ = 38862624.

The previous prime is 84202351. The next prime is 84202403. The reversal of 84202378 is 87320248.

It can be written as a sum of positive squares in 2 ways, for example, as 58568409 + 25633969 = 7653^2 + 5063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619251 + ... + 1619302.

Almost surely, 2^84202378 is an apocalyptic number.

84202378 is a deficient number, since it is larger than the sum of its proper divisors (51816890).

84202378 is a wasteful number, since it uses less digits than its factorization.

84202378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238568.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 84202378 is about 9176.1853730186. The cubic root of 84202378 is about 438.3033455303.

The spelling of 84202378 in words is "eighty-four million, two hundred two thousand, three hundred seventy-eight".