5205000402 has 72 divisors (see below), whose sum is σ = 13187129436. Its totient is φ = 1479389184.

The previous prime is 5205000329. The next prime is 5205000421. The reversal of 5205000402 is 2040005025.

It can be written as a sum of positive squares in 2 ways, for example, as 4975750521 + 229249881 = 70539^2 + 15141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 154938 + ... + 185514.

Almost surely, 2^5205000402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5205000402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6593564718).

5205000402 is an abundant number, since it is smaller than the sum of its proper divisors (7982129034).

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

5205000402 is a wasteful number, since it uses less digits than its factorization.

5205000402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30792 (or 30782 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 5205000402 is about 72145.6887277403. The cubic root of 5205000402 is about 1733.0333588958.

Adding to 5205000402 its reverse (2040005025), we get a palindrome (7245005427).

The spelling of 5205000402 in words is "five billion, two hundred five million, four hundred two", and thus it is an aban number.