3522978 has 48 divisors (see below), whose sum is σ = 8381880. Its totient is φ = 1064448.

The previous prime is 3522977. The next prime is 3522991. The reversal of 3522978 is 8792253.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3448449 + 74529 = 1857^2 + 273^2 .

It is a super-2 number, since 2×3522978² = 24822747976968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3522971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8676 + ... + 9072.

Almost surely, 2^3522978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3522978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4190940).

3522978 is an abundant number, since it is smaller than the sum of its proper divisors (4858902).

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

3522978 is a wasteful number, since it uses less digits than its factorization.

3522978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 3522978 is about 1876.9597758077. The cubic root of 3522978 is about 152.1609847946.

The spelling of 3522978 in words is "three million, five hundred twenty-two thousand, nine hundred seventy-eight".