84151320 has 128 divisors (see below), whose sum is σ = 283011840. Its totient is φ = 19837440.

The previous prime is 84151297. The next prime is 84151337. The reversal of 84151320 is 2315148.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47979 + ... + 49701.

It is an arithmetic number, because the mean of its divisors is an integer number (2211030).

Almost surely, 2^84151320 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 84151320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141505920).

84151320 is an abundant number, since it is smaller than the sum of its proper divisors (198860520).

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

84151320 is a wasteful number, since it uses less digits than its factorization.

84151320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 84151320 is about 9173.4028582637. The cubic root of 84151320 is about 438.2147359305.

Adding to 84151320 its reverse (2315148), we get a palindrome (86466468).

The spelling of 84151320 in words is "eighty-four million, one hundred fifty-one thousand, three hundred twenty".