84678730 has 16 divisors (see below), whose sum is σ = 153848160. Its totient is φ = 33554512.

The previous prime is 84678719. The next prime is 84678733. The reversal of 84678730 is 3787648.

It is not an unprimeable number, because it can be changed into a prime (84678733) 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, 38500 + ... + 40639.

It is an arithmetic number, because the mean of its divisors is an integer number (9615510).

Almost surely, 2^84678730 is an apocalyptic number.

84678730 is a deficient number, since it is larger than the sum of its proper divisors (69169430).

84678730 is a wasteful number, since it uses less digits than its factorization.

84678730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79253.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 84678730 is about 9202.1046505677. The cubic root of 84678730 is about 439.1283190250.

The spelling of 84678730 in words is "eighty-four million, six hundred seventy-eight thousand, seven hundred thirty".