3784240 has 20 divisors (see below), whose sum is σ = 8798544. Its totient is φ = 1513664.

The previous prime is 3784223. The next prime is 3784241. The reversal of 3784240 is 424873.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 3784199 and 3784208.

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, 23572 + ... + 23731.

Almost surely, 2^3784240 is an apocalyptic number.

It is an amenable number.

3784240 is an abundant number, since it is smaller than the sum of its proper divisors (5014304).

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

3784240 is a wasteful number, since it uses less digits than its factorization.

3784240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47316 (or 47310 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 3784240 is about 1945.3123142570. The cubic root of 3784240 is about 155.8330451410.

The spelling of 3784240 in words is "three million, seven hundred eighty-four thousand, two hundred forty".