84087140 has 24 divisors (see below), whose sum is σ = 178301760. Its totient is φ = 33307488.

The previous prime is 84087139. The next prime is 84087161. The reversal of 84087140 is 4178048.

It is a super-2 number, since 2×84087140² = 14141294226759200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84087097 and 84087106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18350 + ... + 22469.

It is an arithmetic number, because the mean of its divisors is an integer number (7429240).

Almost surely, 2^84087140 is an apocalyptic number.

It is an amenable number.

84087140 is an abundant number, since it is smaller than the sum of its proper divisors (94214620).

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

84087140 is a wasteful number, since it uses less digits than its factorization.

84087140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40931 (or 40929 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 84087140 is about 9169.9040343943. The cubic root of 84087140 is about 438.1033026428.

The spelling of 84087140 in words is "eighty-four million, eighty-seven thousand, one hundred forty".