84077020 has 24 divisors (see below), whose sum is σ = 178983504. Its totient is φ = 33169536.

The previous prime is 84076999. The next prime is 84077023. The reversal of 84077020 is 2077048.

It is a self number, because there is not a number n which added to its sum of digits gives 84077020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84077023) 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 7 ways as a sum of consecutive naturals, for example, 27334 + ... + 30253.

It is an arithmetic number, because the mean of its divisors is an integer number (7457646).

Almost surely, 2^84077020 is an apocalyptic number.

It is an amenable number.

84077020 is an abundant number, since it is smaller than the sum of its proper divisors (94906484).

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

84077020 is a wasteful number, since it uses less digits than its factorization.

84077020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57669 (or 57667 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 84077020 is about 9169.3522126702. The cubic root of 84077020 is about 438.0857264978.

Adding to 84077020 its sum of digits (28), we get a palindrome (84077048).

The spelling of 84077020 in words is "eighty-four million, seventy-seven thousand, twenty".