3257540 has 96 divisors (see below), whose sum is σ = 8636544. Its totient is φ = 1013760.

The previous prime is 3257533. The next prime is 3257549. The reversal of 3257540 is 457523.

It is a super-2 number, since 2×3257540² = 21223133703200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (3257549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48587 + ... + 48653.

It is an arithmetic number, because the mean of its divisors is an integer number (89964).

Almost surely, 2^3257540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3257540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4318272).

3257540 is an abundant number, since it is smaller than the sum of its proper divisors (5379004).

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

3257540 is a wasteful number, since it uses less digits than its factorization.

3257540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 3257540 is about 1804.8656459693. The cubic root of 3257540 is about 148.2392647971.

The spelling of 3257540 in words is "three million, two hundred fifty-seven thousand, five hundred forty".