84623240 has 64 divisors (see below), whose sum is σ = 207068400. Its totient is φ = 30938112.

The previous prime is 84623213. The next prime is 84623251. The reversal of 84623240 is 4232648.

It can be written as a sum of positive squares in 8 ways, for example, as 46158436 + 38464804 = 6794^2 + 6202^2 .

It is a super-2 number, since 2×84623240² = 14322185496195200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 55934 + ... + 57426.

Almost surely, 2^84623240 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 84623240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103534200).

84623240 is an abundant number, since it is smaller than the sum of its proper divisors (122445160).

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

84623240 is a wasteful number, since it uses less digits than its factorization.

84623240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 84623240 is about 9199.0890853388. The cubic root of 84623240 is about 439.0323777539.

Adding to 84623240 its reverse (4232648), we get a palindrome (88855888).

The spelling of 84623240 in words is "eighty-four million, six hundred twenty-three thousand, two hundred forty".