8978428 has 12 divisors (see below), whose sum is σ = 15751120. Its totient is φ = 4478112.

The previous prime is 8978381. The next prime is 8978449. The reversal of 8978428 is 8248798.

It is a super-2 number, since 2×8978428² = 161224338702368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801 + ... + 4312.

Almost surely, 2^8978428 is an apocalyptic number.

It is an amenable number.

8978428 is a deficient number, since it is larger than the sum of its proper divisors (6772692).

8978428 is a wasteful number, since it uses less digits than its factorization.

8978428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5554 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 8978428 is about 2996.4025096772. The cubic root of 8978428 is about 207.8420583542.

The spelling of 8978428 in words is "eight million, nine hundred seventy-eight thousand, four hundred twenty-eight".