3405402 has 144 divisors (see below), whose sum is σ = 10456992. Its totient is φ = 816480.

The previous prime is 3405397. The next prime is 3405431. The reversal of 3405402 is 2045043.

It is a happy number.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 261948 + ... + 261960.

It is an arithmetic number, because the mean of its divisors is an integer number (72618).

Almost surely, 2^3405402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3405402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5228496).

3405402 is an abundant number, since it is smaller than the sum of its proper divisors (7051590).

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

3405402 is a wasteful number, since it uses less digits than its factorization.

3405402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3405402 is about 1845.3731330005. The cubic root of 3405402 is about 150.4490543266.

The spelling of 3405402 in words is "three million, four hundred five thousand, four hundred two".