3650420 has 24 divisors (see below), whose sum is σ = 7874664. Its totient is φ = 1420416.

The previous prime is 3650419. The next prime is 3650429. The reversal of 3650420 is 240563.

It can be written as a sum of positive squares in 4 ways, for example, as 698896 + 2951524 = 836^2 + 1718^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3650392 and 3650401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3650429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1727 + ... + 3206.

It is an arithmetic number, because the mean of its divisors is an integer number (328111).

Almost surely, 2^3650420 is an apocalyptic number.

It is an amenable number.

3650420 is an abundant number, since it is smaller than the sum of its proper divisors (4224244).

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

3650420 is a wasteful number, since it uses less digits than its factorization.

3650420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979 (or 4977 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3650420 is about 1910.6072333162. The cubic root of 3650420 is about 153.9740778317.

Adding to 3650420 its reverse (240563), we get a palindrome (3890983).

The spelling of 3650420 in words is "three million, six hundred fifty thousand, four hundred twenty".