3528740 has 24 divisors (see below), whose sum is σ = 7552440. Its totient is φ = 1384448.

The previous prime is 3528659. The next prime is 3528743. The reversal of 3528740 is 478253.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 487204 + 3041536 = 698^2 + 1744^2 .

It is not an unprimeable number, because it can be changed into a prime (3528743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605 + ... + 2724.

It is an arithmetic number, because the mean of its divisors is an integer number (314685).

Almost surely, 2^3528740 is an apocalyptic number.

It is an amenable number.

3528740 is an abundant number, since it is smaller than the sum of its proper divisors (4023700).

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

3528740 is a wasteful number, since it uses less digits than its factorization.

3528740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391 (or 3389 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 3528740 is about 1878.4940777123. The cubic root of 3528740 is about 152.2438951466.

The spelling of 3528740 in words is "three million, five hundred twenty-eight thousand, seven hundred forty".