3494640 has 40 divisors (see below), whose sum is σ = 10834128. Its totient is φ = 931840.

The previous prime is 3494627. The next prime is 3494641. The reversal of 3494640 is 464943.

3494640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3494598 and 3494607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3494641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7041 + ... + 7520.

Almost surely, 2^3494640 is an apocalyptic number.

3494640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3494640 is an abundant number, since it is smaller than the sum of its proper divisors (7339488).

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

3494640 is a wasteful number, since it uses less digits than its factorization.

3494640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14577 (or 14571 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 3494640 is about 1869.3956242593. The cubic root of 3494640 is about 151.7519036769.

The spelling of 3494640 in words is "three million, four hundred ninety-four thousand, six hundred forty".