3720572856 has 648 divisors, whose sum is σ = 14466128040. Its totient is φ = 845095680.

The previous prime is 3720572819. The next prime is 3720572873. The reversal of 3720572856 is 6582750273.

3720572856 is a `hidden beast` number, since 3 + 7 + 20 + 572 + 8 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 195819615 + ... + 195819633.

Almost surely, 2^3720572856 is an apocalyptic number.

3720572856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3720572856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7233064020).

3720572856 is an abundant number, since it is smaller than the sum of its proper divisors (10745555184).

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

3720572856 is a wasteful number, since it uses less digits than its factorization.

3720572856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 3720572856 is about 60996.4987191888. The cubic root of 3720572856 is about 1549.5417106432.

The spelling of 3720572856 in words is "three billion, seven hundred twenty million, five hundred seventy-two thousand, eight hundred fifty-six".