84180052 has 24 divisors (see below), whose sum is σ = 164630592. Its totient is φ = 37329600.

The previous prime is 84180043. The next prime is 84180067. The reversal of 84180052 is 25008148.

It is a self number, because there is not a number n which added to its sum of digits gives 84180052.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21528 + ... + 25135.

It is an arithmetic number, because the mean of its divisors is an integer number (6859608).

Almost surely, 2^84180052 is an apocalyptic number.

84180052 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

84180052 is a deficient number, since it is larger than the sum of its proper divisors (80450540).

84180052 is a wasteful number, since it uses less digits than its factorization.

84180052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46719 (or 46717 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 84180052 is about 9174.9687737888. The cubic root of 84180052 is about 438.2646038474.

The spelling of 84180052 in words is "eighty-four million, one hundred eighty thousand, fifty-two".