3732820 has 72 divisors (see below), whose sum is σ = 9853704. Its totient is φ = 1177344.

The previous prime is 3732791. The next prime is 3732853. The reversal of 3732820 is 282373.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 571536 + 3161284 = 756^2 + 1778^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12594 + ... + 12886.

It is an arithmetic number, because the mean of its divisors is an integer number (136857).

Almost surely, 2^3732820 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 3732820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4926852).

3732820 is an abundant number, since it is smaller than the sum of its proper divisors (6120884).

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

3732820 is a wasteful number, since it uses less digits than its factorization.

3732820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 3732820 is about 1932.0507239718. The cubic root of 3732820 is about 155.1240075946.

The spelling of 3732820 in words is "three million, seven hundred thirty-two thousand, eight hundred twenty".