26978064 has 20 divisors (see below), whose sum is σ = 69693456. Its totient is φ = 8992672.

The previous prime is 26978059. The next prime is 26978087. The reversal of 26978064 is 46087962.

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, 280974 + ... + 281069.

Almost surely, 2^26978064 is an apocalyptic number.

26978064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26978064 is an abundant number, since it is smaller than the sum of its proper divisors (42715392).

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

26978064 is a wasteful number, since it uses less digits than its factorization.

26978064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562054 (or 562048 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 26978064 is about 5194.0412012228. The cubic root of 26978064 is about 299.9187335434.

The spelling of 26978064 in words is "twenty-six million, nine hundred seventy-eight thousand, sixty-four".