3405248 has 56 divisors (see below), whose sum is σ = 8436864. Its totient is φ = 1324800.

The previous prime is 3405247. The next prime is 3405263. The reversal of 3405248 is 8425043.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4583 + ... + 5273.

Almost surely, 2^3405248 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 3405248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4218432).

3405248 is an abundant number, since it is smaller than the sum of its proper divisors (5031616).

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

3405248 is a wasteful number, since it uses less digits than its factorization.

3405248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 3405248 is about 1845.3314065501. The cubic root of 3405248 is about 150.4467864099.

The spelling of 3405248 in words is "three million, four hundred five thousand, two hundred forty-eight".