3500420 has 48 divisors (see below), whose sum is σ = 9168768. Its totient is φ = 1090560.

The previous prime is 3500407. The next prime is 3500429. The reversal of 3500420 is 240053.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 3500395 and 3500404.

It is not an unprimeable number, because it can be changed into a prime (3500429) 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, 404 + ... + 2676.

It is an arithmetic number, because the mean of its divisors is an integer number (191016).

Almost surely, 2^3500420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3500420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4584384).

3500420 is an abundant number, since it is smaller than the sum of its proper divisors (5668348).

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

3500420 is a wasteful number, since it uses less digits than its factorization.

3500420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300 (or 2298 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 3500420 is about 1870.9409397413. The cubic root of 3500420 is about 151.8355215288.

Adding to 3500420 its reverse (240053), we get a palindrome (3740473).

The spelling of 3500420 in words is "three million, five hundred thousand, four hundred twenty".