26278020 has 72 divisors (see below), whose sum is σ = 82677504. Its totient is φ = 7006176.

The previous prime is 26278001. The next prime is 26278061. The reversal of 26278020 is 2087262.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2157 + ... + 7563.

Almost surely, 2^26278020 is an apocalyptic number.

26278020 is a gapful number since it is divisible by the number (20) 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 26278020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41338752).

26278020 is an abundant number, since it is smaller than the sum of its proper divisors (56399484).

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

26278020 is a wasteful number, since it uses less digits than its factorization.

26278020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431 (or 5417 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 26278020 is about 5126.2091256600. The cubic root of 26278020 is about 297.3018052373.

The spelling of 26278020 in words is "twenty-six million, two hundred seventy-eight thousand, twenty".