84877540 has 48 divisors (see below), whose sum is σ = 195552000. Its totient is φ = 30689280.

The previous prime is 84877517. The next prime is 84877547. The reversal of 84877540 is 4577848.

It is not an unprimeable number, because it can be changed into a prime (84877547) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41461 + ... + 43459.

It is an arithmetic number, because the mean of its divisors is an integer number (4074000).

Almost surely, 2^84877540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84877540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97776000).

84877540 is an abundant number, since it is smaller than the sum of its proper divisors (110674460).

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

84877540 is a wasteful number, since it uses less digits than its factorization.

84877540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212 (or 2210 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 84877540 is about 9212.9007375527. The cubic root of 84877540 is about 439.4717144532.

The spelling of 84877540 in words is "eighty-four million, eight hundred seventy-seven thousand, five hundred forty".