84649872 has 20 divisors (see below), whose sum is σ = 218678960. Its totient is φ = 28216608.

The previous prime is 84649849. The next prime is 84649909. The reversal of 84649872 is 27894648.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1763539 = 84649872 / (8 + 4 + 6 + 4 + 9 + 8 + 7 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881722 + ... + 881817.

It is an arithmetic number, because the mean of its divisors is an integer number (10933948).

Almost surely, 2^84649872 is an apocalyptic number.

It is an amenable number.

84649872 is an abundant number, since it is smaller than the sum of its proper divisors (134029088).

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

84649872 is a wasteful number, since it uses less digits than its factorization.

84649872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763550 (or 1763544 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 84649872 is about 9200.5365060957. The cubic root of 84649872 is about 439.0784292638.

It can be divided in two parts, 8464 and 9872, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 84649872 in words is "eighty-four million, six hundred forty-nine thousand, eight hundred seventy-two".