3907428 has 48 divisors (see below), whose sum is σ = 10518144. Its totient is φ = 1105920.

The previous prime is 3907417. The next prime is 3907441. The reversal of 3907428 is 8247093.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15076 + ... + 15332.

It is an arithmetic number, because the mean of its divisors is an integer number (219128).

Almost surely, 2^3907428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3907428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5259072).

3907428 is an abundant number, since it is smaller than the sum of its proper divisors (6610716).

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

3907428 is a wasteful number, since it uses less digits than its factorization.

3907428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 450 counting only the distinct ones).

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

The square root of 3907428 is about 1976.7215281875. The cubic root of 3907428 is about 157.5059609737.

The spelling of 3907428 in words is "three million, nine hundred seven thousand, four hundred twenty-eight".