5402168840 has 16 divisors (see below), whose sum is σ = 12154879980. Its totient is φ = 2160867520.

The previous prime is 5402168839. The next prime is 5402168843. The reversal of 5402168840 is 488612045.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4802212804 + 599956036 = 69298^2 + 24494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5402168794 and 5402168803.

It is not an unprimeable number, because it can be changed into a prime (5402168843) 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, 67527071 + ... + 67527150.

Almost surely, 2^5402168840 is an apocalyptic number.

It is an amenable number.

5402168840 is an abundant number, since it is smaller than the sum of its proper divisors (6752711140).

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

5402168840 is a wasteful number, since it uses less digits than its factorization.

5402168840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135054232 (or 135054228 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 5402168840 is about 73499.4478890828. The cubic root of 5402168840 is about 1754.6454902535.

The spelling of 5402168840 in words is "five billion, four hundred two million, one hundred sixty-eight thousand, eight hundred forty".