3502404020 has 24 divisors (see below), whose sum is σ = 7479712800. Its totient is φ = 1377216032.

The previous prime is 3502403953. The next prime is 3502404067. The reversal of 3502404020 is 204042053.

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 = 3502403983 and 3502404001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1482890 + ... + 1485249.

It is an arithmetic number, because the mean of its divisors is an integer number (311654700).

Almost surely, 2^3502404020 is an apocalyptic number.

It is an amenable number.

3502404020 is an abundant number, since it is smaller than the sum of its proper divisors (3977308780).

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

3502404020 is a wasteful number, since it uses less digits than its factorization.

3502404020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968207 (or 2968205 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3502404020 is about 59181.1120206439. The cubic root of 3502404020 is about 1518.6420264086.

Adding to 3502404020 its reverse (204042053), we get a palindrome (3706446073).

The spelling of 3502404020 in words is "three billion, five hundred two million, four hundred four thousand, twenty".