26878464 has 120 divisors (see below), whose sum is σ = 81921840. Its totient is φ = 8460288.

The previous prime is 26878463. The next prime is 26878469. The reversal of 26878464 is 46487862.

It is not an unprimeable number, because it can be changed into a prime (26878463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87399 + ... + 87705.

It is an arithmetic number, because the mean of its divisors is an integer number (682682).

Almost surely, 2^26878464 is an apocalyptic number.

26878464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26878464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40960920).

26878464 is an abundant number, since it is smaller than the sum of its proper divisors (55043376).

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

26878464 is a wasteful number, since it uses less digits than its factorization.

26878464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 331 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 26878464 is about 5184.4444253941. Note that the first 4 decimals coincide. The cubic root of 26878464 is about 299.5491895725.

The spelling of 26878464 in words is "twenty-six million, eight hundred seventy-eight thousand, four hundred sixty-four".