84978652 has 48 divisors (see below), whose sum is σ = 170843904. Its totient is φ = 36608000.

The previous prime is 84978611. The next prime is 84978653. The reversal of 84978652 is 25687948.

It is a junction number, because it is equal to n+sod(n) for n = 84978596 and 84978605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84978653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132252 + ... + 132892.

It is an arithmetic number, because the mean of its divisors is an integer number (3559248).

Almost surely, 2^84978652 is an apocalyptic number.

It is an amenable number.

84978652 is an abundant number, since it is smaller than the sum of its proper divisors (85865252).

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

84978652 is a wasteful number, since it uses less digits than its factorization.

84978652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 808 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 84978652 is about 9218.3866267368. The cubic root of 84978652 is about 439.6461549103.

The spelling of 84978652 in words is "eighty-four million, nine hundred seventy-eight thousand, six hundred fifty-two".