3548640 has 48 divisors (see below), whose sum is σ = 11179728. Its totient is φ = 946176.

The previous prime is 3548639. The next prime is 3548681. The reversal of 3548640 is 468453.

It is a tau number, because it is divible by the number of its divisors (48).

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 = 3548598 and 3548607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3217 + ... + 4176.

It is an arithmetic number, because the mean of its divisors is an integer number (232911).

Almost surely, 2^3548640 is an apocalyptic number.

3548640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3548640 is an abundant number, since it is smaller than the sum of its proper divisors (7631088).

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

3548640 is a wasteful number, since it uses less digits than its factorization.

3548640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411 (or 7403 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 3548640 is about 1883.7834270425. The cubic root of 3548640 is about 152.5295472623.

The spelling of 3548640 in words is "three million, five hundred forty-eight thousand, six hundred forty".