84971240 has 32 divisors (see below), whose sum is σ = 196355880. Its totient is φ = 33069312.

The previous prime is 84971233. The next prime is 84971267. The reversal of 84971240 is 4217948.

It can be written as a sum of positive squares in 4 ways, for example, as 67010596 + 17960644 = 8186^2 + 4238^2 .

It is a super-2 number, since 2×84971240² = 14440223254275200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84971240.

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, 27227 + ... + 30186.

Almost surely, 2^84971240 is an apocalyptic number.

It is an amenable number.

84971240 is an abundant number, since it is smaller than the sum of its proper divisors (111384640).

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

84971240 is a wasteful number, since it uses less digits than its factorization.

84971240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57461 (or 57457 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 84971240 is about 9217.9845953440. The cubic root of 84971240 is about 439.6333722802.

The spelling of 84971240 in words is "eighty-four million, nine hundred seventy-one thousand, two hundred forty".