3928650 has 48 divisors (see below), whose sum is σ = 10633248. Its totient is φ = 952000.

The previous prime is 3928637. The next prime is 3928651. The reversal of 3928650 is 568293.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3928651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (221526).

Almost surely, 2^3928650 is an apocalyptic number.

3928650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3928650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5316624).

3928650 is an abundant number, since it is smaller than the sum of its proper divisors (6704598).

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

3928650 is a wasteful number, since it uses less digits than its factorization.

3928650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 3928650 is about 1982.0822384553. The cubic root of 3928650 is about 157.7905947768.

The spelling of 3928650 in words is "three million, nine hundred twenty-eight thousand, six hundred fifty".