3720705028 has 24 divisors (see below), whose sum is σ = 6598417280. Its totient is φ = 1835477280.

The previous prime is 3720705013. The next prime is 3720705029. The reversal of 3720705028 is 8205070273.

It is a junction number, because it is equal to n+sod(n) for n = 3720704984 and 3720705002.

It is not an unprimeable number, because it can be changed into a prime (3720705029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546775 + ... + 553537.

Almost surely, 2^3720705028 is an apocalyptic number.

It is an amenable number.

3720705028 is a deficient number, since it is larger than the sum of its proper divisors (2877712252).

3720705028 is a wasteful number, since it uses less digits than its factorization.

3720705028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8587 (or 8585 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 3720705028 is about 60997.5821488032. The cubic root of 3720705028 is about 1549.5600593948.

The spelling of 3720705028 in words is "three billion, seven hundred twenty million, seven hundred five thousand, twenty-eight".