3405924 has 36 divisors (see below), whose sum is σ = 8845564. Its totient is φ = 1104192.

The previous prime is 3405907. The next prime is 3405929. The reversal of 3405924 is 4295043.

It can be written as a sum of positive squares in 2 ways, for example, as 2340900 + 1065024 = 1530^2 + 1032^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3405929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54 + ... + 2610.

Almost surely, 2^3405924 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 3405924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4422782).

3405924 is an abundant number, since it is smaller than the sum of its proper divisors (5439640).

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

3405924 is a wasteful number, since it uses less digits than its factorization.

3405924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3405924 is about 1845.5145623917. The cubic root of 3405924 is about 150.4567411718.

The spelling of 3405924 in words is "three million, four hundred five thousand, nine hundred twenty-four".