3917428 has 12 divisors (see below), whose sum is σ = 6872992. Its totient is φ = 1953720.

The previous prime is 3917413. The next prime is 3917453. The reversal of 3917428 is 8247193.

It is a junction number, because it is equal to n+sod(n) for n = 3917393 and 3917402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 943 + ... + 2953.

Almost surely, 2^3917428 is an apocalyptic number.

It is an amenable number.

3917428 is a deficient number, since it is larger than the sum of its proper divisors (2955564).

3917428 is a wasteful number, since it uses less digits than its factorization.

3917428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502 (or 2500 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 3917428 is about 1979.2493526587. The cubic root of 3917428 is about 157.6402110798.

The spelling of 3917428 in words is "three million, nine hundred seventeen thousand, four hundred twenty-eight".