5405220 has 36 divisors (see below), whose sum is σ = 16396380. Its totient is φ = 1441344.

The previous prime is 5405189. The next prime is 5405221. The reversal of 5405220 is 225045.

It can be written as a sum of positive squares in 2 ways, for example, as 4064256 + 1340964 = 2016^2 + 1158^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 5405193 and 5405202.

It is not an unprimeable number, because it can be changed into a prime (5405221) 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, 14835 + ... + 15194.

It is an arithmetic number, because the mean of its divisors is an integer number (455455).

Almost surely, 2^5405220 is an apocalyptic number.

It is an amenable number.

5405220 is an abundant number, since it is smaller than the sum of its proper divisors (10991160).

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

5405220 is a wasteful number, since it uses less digits than its factorization.

5405220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30044 (or 30039 counting only the distinct ones).

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

The square root of 5405220 is about 2324.9129015944. The cubic root of 5405220 is about 175.4975770966.

It can be divided in two parts, 5405 and 220, that added together give a square (5625 = 75²).

The spelling of 5405220 in words is "five million, four hundred five thousand, two hundred twenty".