3952820 has 12 divisors (see below), whose sum is σ = 8300964. Its totient is φ = 1581120.

The previous prime is 3952813. The next prime is 3952873. The reversal of 3952820 is 282593.

It can be written as a sum of positive squares in 2 ways, for example, as 1373584 + 2579236 = 1172^2 + 1606^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98801 + ... + 98840.

It is an arithmetic number, because the mean of its divisors is an integer number (691747).

Almost surely, 2^3952820 is an apocalyptic number.

It is an amenable number.

3952820 is an abundant number, since it is smaller than the sum of its proper divisors (4348144).

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

3952820 is a wasteful number, since it uses less digits than its factorization.

3952820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197650 (or 197648 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 3952820 is about 1988.1700128510. The cubic root of 3952820 is about 158.1135220048.

The spelling of 3952820 in words is "three million, nine hundred fifty-two thousand, eight hundred twenty".