806978424 has 64 divisors (see below), whose sum is σ = 2349181440. Its totient is φ = 226212480.

The previous prime is 806978411. The next prime is 806978429. The reversal of 806978424 is 424879608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806978429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36412 + ... + 54219.

It is an arithmetic number, because the mean of its divisors is an integer number (36705960).

Almost surely, 2^806978424 is an apocalyptic number.

806978424 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

806978424 is an abundant number, since it is smaller than the sum of its proper divisors (1542203016).

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

806978424 is a wasteful number, since it uses less digits than its factorization.

806978424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90700 (or 90696 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 806978424 is about 28407.3656645596. The cubic root of 806978424 is about 931.0092039072.

The spelling of 806978424 in words is "eight hundred six million, nine hundred seventy-eight thousand, four hundred twenty-four".