3502672720 has 20 divisors (see below), whose sum is σ = 8143714260. Its totient is φ = 1401069056.

The previous prime is 3502672717. The next prime is 3502672721. The reversal of 3502672720 is 272762053.

It can be written as a sum of positive squares in 2 ways, for example, as 419758144 + 3082914576 = 20488^2 + 55524^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3502672721) 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 3 ways as a sum of consecutive naturals, for example, 21891625 + ... + 21891784.

It is an arithmetic number, because the mean of its divisors is an integer number (407185713).

Almost surely, 2^3502672720 is an apocalyptic number.

It is an amenable number.

3502672720 is an abundant number, since it is smaller than the sum of its proper divisors (4641041540).

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

3502672720 is a wasteful number, since it uses less digits than its factorization.

3502672720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43783422 (or 43783416 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 3502672720 is about 59183.3821270802. The cubic root of 3502672720 is about 1518.6808615131.

The spelling of 3502672720 in words is "three billion, five hundred two million, six hundred seventy-two thousand, seven hundred twenty".