3706224520 has 64 divisors (see below), whose sum is σ = 8570545200. Its totient is φ = 1441566720.

The previous prime is 3706224503. The next prime is 3706224539. The reversal of 3706224520 is 254226073.

It can be written as a sum of positive squares in 8 ways, for example, as 186650244 + 3519574276 = 13662^2 + 59326^2 .

It is a super-2 number, since 2×3706224520² = 27472200385298460800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516316 + ... + 523444.

Almost surely, 2^3706224520 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 3706224520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4285272600).

3706224520 is an abundant number, since it is smaller than the sum of its proper divisors (4864320680).

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

3706224520 is a wasteful number, since it uses less digits than its factorization.

3706224520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7498 (or 7494 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 3706224520 is about 60878.7690414318. The cubic root of 3706224520 is about 1547.5472160476.

The spelling of 3706224520 in words is "three billion, seven hundred six million, two hundred twenty-four thousand, five hundred twenty".