3450240 has 96 divisors (see below), whose sum is σ = 11934000. Its totient is φ = 918528.

The previous prime is 3450233. The next prime is 3450241. The reversal of 3450240 is 420543.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3450241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5461 + ... + 6059.

Almost surely, 2^3450240 is an apocalyptic number.

3450240 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 3450240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5967000).

3450240 is an abundant number, since it is smaller than the sum of its proper divisors (8483760).

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

3450240 is a wasteful number, since it uses less digits than its factorization.

3450240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 3450240 is about 1857.4821668054. The cubic root of 3450240 is about 151.1064845437.

Adding to 3450240 its reverse (420543), we get a palindrome (3870783).

The spelling of 3450240 in words is "three million, four hundred fifty thousand, two hundred forty".