5205990 has 32 divisors (see below), whose sum is σ = 12630240. Its totient is φ = 1373184.

The previous prime is 5205989. The next prime is 5205997. The reversal of 5205990 is 995025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2016 + ... + 3804.

It is an arithmetic number, because the mean of its divisors is an integer number (394695).

Almost surely, 2^5205990 is an apocalyptic number.

5205990 is an abundant number, since it is smaller than the sum of its proper divisors (7424250).

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

5205990 is a wasteful number, since it uses less digits than its factorization.

5205990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 5205990 is about 2281.6638665676. The cubic root of 5205990 is about 173.3143182625.

The spelling of 5205990 in words is "five million, two hundred five thousand, nine hundred ninety".