3730545720 has 768 divisors, whose sum is σ = 15058068480. Its totient is φ = 821145600.

The previous prime is 3730545701. The next prime is 3730545737. The reversal of 3730545720 is 275450373.

3730545720 is a `hidden beast` number, since 3 + 7 + 30 + 54 + 572 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 90988900 + ... + 90988940.

It is an arithmetic number, because the mean of its divisors is an integer number (19606860).

Almost surely, 2^3730545720 is an apocalyptic number.

3730545720 is a gapful number since it is divisible by the number (30) 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 3730545720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7529034240).

3730545720 is an abundant number, since it is smaller than the sum of its proper divisors (11327522760).

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

3730545720 is a wasteful number, since it uses less digits than its factorization.

3730545720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 36.

The square root of 3730545720 is about 61078.1934899846. The cubic root of 3730545720 is about 1550.9249727072.

The spelling of 3730545720 in words is "three billion, seven hundred thirty million, five hundred forty-five thousand, seven hundred twenty".