3500620040 has 32 divisors (see below), whose sum is σ = 8290944000. Its totient is φ = 1326550464.

The previous prime is 3500620009. The next prime is 3500620049. The reversal of 3500620040 is 400260053.

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 = 3500619994 and 3500620021.

It is not an unprimeable number, because it can be changed into a prime (3500620049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302280 + ... + 2303799.

It is an arithmetic number, because the mean of its divisors is an integer number (259092000).

Almost surely, 2^3500620040 is an apocalyptic number.

It is an amenable number.

3500620040 is an abundant number, since it is smaller than the sum of its proper divisors (4790323960).

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

3500620040 is a wasteful number, since it uses less digits than its factorization.

3500620040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606109 (or 4606105 counting only the distinct ones).

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

The square root of 3500620040 is about 59166.0378933726. The cubic root of 3500620040 is about 1518.3841381023.

Adding to 3500620040 its reverse (400260053), we get a palindrome (3900880093).

The spelling of 3500620040 in words is "three billion, five hundred million, six hundred twenty thousand, forty".