3928212 has 36 divisors (see below), whose sum is σ = 10454080. Its totient is φ = 1240272.

The previous prime is 3928189. The next prime is 3928229. The reversal of 3928212 is 2128293.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×3928212⁴ (a number of 27 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2188 + ... + 3555.

Almost surely, 2^3928212 is an apocalyptic number.

It is an amenable number.

3928212 is an abundant number, since it is smaller than the sum of its proper divisors (6525868).

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

3928212 is a wasteful number, since it uses less digits than its factorization.

3928212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772 (or 5767 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 3928212 is about 1981.9717455100. The cubic root of 3928212 is about 157.7847306038.

The spelling of 3928212 in words is "three million, nine hundred twenty-eight thousand, two hundred twelve".