84276978 has 16 divisors (see below), whose sum is σ = 168648480. Its totient is φ = 28076576.

The previous prime is 84276953. The next prime is 84277001. The reversal of 84276978 is 87967248.

It is a self number, because there is not a number n which added to its sum of digits gives 84276978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13801 + ... + 18947.

It is an arithmetic number, because the mean of its divisors is an integer number (10540530).

Almost surely, 2^84276978 is an apocalyptic number.

84276978 is an abundant number, since it is smaller than the sum of its proper divisors (84371502).

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

84276978 is a wasteful number, since it uses less digits than its factorization.

84276978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7881.

The product of its digits is 1354752, while the sum is 51.

The square root of 84276978 is about 9180.2493430190. The cubic root of 84276978 is about 438.4327471731.

The spelling of 84276978 in words is "eighty-four million, two hundred seventy-six thousand, nine hundred seventy-eight".