3521238 has 64 divisors (see below), whose sum is σ = 8640000. Its totient is φ = 954912.

The previous prime is 3521237. The next prime is 3521239. The reversal of 3521238 is 8321253.

It is an interprime number because it is at equal distance from previous prime (3521237) and next prime (3521239).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521237) 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, 59653 + ... + 59711.

It is an arithmetic number, because the mean of its divisors is an integer number (135000).

Almost surely, 2^3521238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4320000).

3521238 is an abundant number, since it is smaller than the sum of its proper divisors (5118762).

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

3521238 is a wasteful number, since it uses less digits than its factorization.

3521238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 100 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 3521238 is about 1876.4962030337. The cubic root of 3521238 is about 152.1359298824.

The spelling of 3521238 in words is "three million, five hundred twenty-one thousand, two hundred thirty-eight".