3422640 has 80 divisors (see below), whose sum is σ = 11436768. Its totient is φ = 841728.

The previous prime is 3422633. The next prime is 3422647. The reversal of 3422640 is 462243.

It is an interprime number because it is at equal distance from previous prime (3422633) and next prime (3422647).

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

It is not an unprimeable number, because it can be changed into a prime (3422647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2572 + ... + 3668.

Almost surely, 2^3422640 is an apocalyptic number.

3422640 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 3422640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5718384).

3422640 is an abundant number, since it is smaller than the sum of its proper divisors (8014128).

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

3422640 is a wasteful number, since it uses less digits than its factorization.

3422640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 3422640 is about 1850.0378374509. The cubic root of 3422640 is about 150.7024827618.

Adding to 3422640 its reverse (462243), we get a palindrome (3884883).

The spelling of 3422640 in words is "three million, four hundred twenty-two thousand, six hundred forty".