2478928 has 10 divisors (see below), whose sum is σ = 4802954. Its totient is φ = 1239456.

The previous prime is 2478899. The next prime is 2478937. The reversal of 2478928 is 8298742.

It can be written as a sum of positive squares in only one way, i.e., 2471184 + 7744 = 1572^2 + 88^2 .

It is a super-2 number, since 2×2478928² = 12290168058368, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77451 + ... + 77482.

2^2478928 is an apocalyptic number.

It is an amenable number.

2478928 is a deficient number, since it is larger than the sum of its proper divisors (2324026).

2478928 is a wasteful number, since it uses less digits than its factorization.

2478928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154941 (or 154935 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 2478928 is about 1574.4611776732. The cubic root of 2478928 is about 135.3384830372.

The spelling of 2478928 in words is "two million, four hundred seventy-eight thousand, nine hundred twenty-eight".