3521478 has 16 divisors (see below), whose sum is σ = 7081776. Its totient is φ = 1167360.

The previous prime is 3521473. The next prime is 3521489. The reversal of 3521478 is 8741253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521473) 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, 363 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (442611).

Almost surely, 2^3521478 is an apocalyptic number.

3521478 is an abundant number, since it is smaller than the sum of its proper divisors (3560298).

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

3521478 is a wasteful number, since it uses less digits than its factorization.

3521478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239.

The product of its digits is 6720, while the sum is 30.

The square root of 3521478 is about 1876.5601509144. The cubic root of 3521478 is about 152.1393862230.

It can be divided in two parts, 352 and 1478, that added together give a triangular number (1830 = T₆₀).

The spelling of 3521478 in words is "three million, five hundred twenty-one thousand, four hundred seventy-eight".