3928722 has 64 divisors (see below), whose sum is σ = 9676800. Its totient is φ = 1060752.

The previous prime is 3928721. The next prime is 3928733. The reversal of 3928722 is 2278293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928721) 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 31 ways as a sum of consecutive naturals, for example, 47293 + ... + 47375.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

Almost surely, 2^3928722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3928722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4838400).

3928722 is an abundant number, since it is smaller than the sum of its proper divisors (5748078).

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

3928722 is a wasteful number, since it uses less digits than its factorization.

3928722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 118 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 3928722 is about 1982.1004010897. The cubic root of 3928722 is about 157.7915587087.

The spelling of 3928722 in words is "three million, nine hundred twenty-eight thousand, seven hundred twenty-two".