26780481 has 48 divisors (see below), whose sum is σ = 50144640. Its totient is φ = 13374720.

The previous prime is 26780449. The next prime is 26780483. The reversal of 26780481 is 18408762.

It is not a de Polignac number, because 26780481 - 2⁵ = 26780449 is a prime.

It is a super-2 number, since 2×26780481² = 1434388325182722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26780483) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14701 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (1044680).

Almost surely, 2^26780481 is an apocalyptic number.

26780481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26780481 is a deficient number, since it is larger than the sum of its proper divisors (23364159).

26780481 is a wasteful number, since it uses less digits than its factorization.

26780481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 26780481 is about 5174.9860869378. The cubic root of 26780481 is about 299.1847532492.

It can be divided in two parts, 26780 and 481, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 26780481 in words is "twenty-six million, seven hundred eighty thousand, four hundred eighty-one".