3781504 has 32 divisors (see below), whose sum is σ = 7784640. Its totient is φ = 1827840.

The previous prime is 3781501. The next prime is 3781507. The reversal of 3781504 is 4051873.

It is an interprime number because it is at equal distance from previous prime (3781501) and next prime (3781507).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492 + ... + 4444.

It is an arithmetic number, because the mean of its divisors is an integer number (243270).

Almost surely, 2^3781504 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 3781504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3892320).

3781504 is an abundant number, since it is smaller than the sum of its proper divisors (4003136).

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

3781504 is an equidigital number, since it uses as much as digits as its factorization.

3781504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 3781504 is about 1944.6089581199. The cubic root of 3781504 is about 155.7954803984.

The spelling of 3781504 in words is "three million, seven hundred eighty-one thousand, five hundred four".