3700728 has 40 divisors (see below), whose sum is σ = 10367280. Its totient is φ = 1233360.

The previous prime is 3700727. The next prime is 3700751. The reversal of 3700728 is 8270073.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3700727) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2208 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (259182).

Almost surely, 2^3700728 is an apocalyptic number.

It is an amenable number.

3700728 is an abundant number, since it is smaller than the sum of its proper divisors (6666552).

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

3700728 is a wasteful number, since it uses less digits than its factorization.

3700728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5729 (or 5716 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 3700728 is about 1923.7276314489. The cubic root of 3700728 is about 154.6781807058.

The spelling of 3700728 in words is "three million, seven hundred thousand, seven hundred twenty-eight".