3257040 has 80 divisors (see below), whose sum is σ = 10374336. Its totient is φ = 844800.

The previous prime is 3257027. The next prime is 3257063. The reversal of 3257040 is 407523.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 3256998 and 3257016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9675 + ... + 10005.

Almost surely, 2^3257040 is an apocalyptic number.

3257040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3257040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5187168).

3257040 is an abundant number, since it is smaller than the sum of its proper divisors (7117296).

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

3257040 is a wasteful number, since it uses less digits than its factorization.

3257040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 3257040 is about 1804.7271261883. The cubic root of 3257040 is about 148.2316799913.

The spelling of 3257040 in words is "three million, two hundred fifty-seven thousand, forty".