3400638 has 32 divisors (see below), whose sum is σ = 7188480. Its totient is φ = 1070880.

The previous prime is 3400637. The next prime is 3400673. The reversal of 3400638 is 8360043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3400637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8548 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (224640).

Almost surely, 2^3400638 is an apocalyptic number.

3400638 is an abundant number, since it is smaller than the sum of its proper divisors (3787842).

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

3400638 is a wasteful number, since it uses less digits than its factorization.

3400638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 3400638 is about 1844.0818853836. The cubic root of 3400638 is about 150.3788644945.

The spelling of 3400638 in words is "three million, four hundred thousand, six hundred thirty-eight".