3641420 has 24 divisors (see below), whose sum is σ = 7700784. Its totient is φ = 1446336.

The previous prime is 3641401. The next prime is 3641423. The reversal of 3641420 is 241463.

3641420 = 282² + 283² + ... + 321².

It is a happy number.

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 = 3641392 and 3641401.

It is not an unprimeable number, because it can be changed into a prime (3641423) 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, 2702 + ... + 3818.

It is an arithmetic number, because the mean of its divisors is an integer number (320866).

Almost surely, 2^3641420 is an apocalyptic number.

It is an amenable number.

3641420 is an abundant number, since it is smaller than the sum of its proper divisors (4059364).

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

3641420 is a wasteful number, since it uses less digits than its factorization.

3641420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3641420 is about 1908.2505076640. The cubic root of 3641420 is about 153.8474342201.

Adding to 3641420 its reverse (241463), we get a palindrome (3882883).

The spelling of 3641420 in words is "three million, six hundred forty-one thousand, four hundred twenty".