84628240 has 20 divisors (see below), whose sum is σ = 196760844. Its totient is φ = 33851264.

The previous prime is 84628217. The next prime is 84628249. The reversal of 84628240 is 4282648.

It can be written as a sum of positive squares in 2 ways, for example, as 54641664 + 29986576 = 7392^2 + 5476^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 84628196 and 84628205.

It is not an unprimeable number, because it can be changed into a prime (84628249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528847 + ... + 529006.

Almost surely, 2^84628240 is an apocalyptic number.

84628240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84628240 is an abundant number, since it is smaller than the sum of its proper divisors (112132604).

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

84628240 is a wasteful number, since it uses less digits than its factorization.

84628240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057866 (or 1057860 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 84628240 is about 9199.3608473633. The cubic root of 84628240 is about 439.0410243883.

The spelling of 84628240 in words is "eighty-four million, six hundred twenty-eight thousand, two hundred forty".