3784281 has 4 divisors (see below), whose sum is σ = 5045712. Its totient is φ = 2522852.

The previous prime is 3784273. The next prime is 3784309. The reversal of 3784281 is 1824873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3784281 - 2³ = 3784273 is a prime.

It is a super-2 number, since 2×3784281² = 28641565373922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3784241) 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, 630711 + ... + 630716.

It is an arithmetic number, because the mean of its divisors is an integer number (1261428).

Almost surely, 2^3784281 is an apocalyptic number.

It is an amenable number.

3784281 is a deficient number, since it is larger than the sum of its proper divisors (1261431).

3784281 is a wasteful number, since it uses less digits than its factorization.

3784281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261430.

The product of its digits is 10752, while the sum is 33.

The square root of 3784281 is about 1945.3228523821. The cubic root of 3784281 is about 155.8336079253.

The spelling of 3784281 in words is "three million, seven hundred eighty-four thousand, two hundred eighty-one".