84562240 has 84 divisors (see below), whose sum is σ = 234282996. Its totient is φ = 28987392.

The previous prime is 84562223. The next prime is 84562243. The reversal of 84562240 is 4226548.

It can be written as a sum of positive squares in 2 ways, for example, as 59721984 + 24840256 = 7728^2 + 4984^2 .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84562243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12984 + ... + 18376.

Almost surely, 2^84562240 is an apocalyptic number.

84562240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84562240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117141498).

84562240 is an abundant number, since it is smaller than the sum of its proper divisors (149720756).

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

84562240 is a wasteful number, since it uses less digits than its factorization.

84562240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424 (or 5407 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 84562240 is about 9195.7729419555. The cubic root of 84562240 is about 438.9268613789.

Adding to 84562240 its reverse (4226548), we get a palindrome (88788788).

The spelling of 84562240 in words is "eighty-four million, five hundred sixty-two thousand, two hundred forty".