26493680 has 20 divisors (see below), whose sum is σ = 61597992. Its totient is φ = 10597440.

The previous prime is 26493679. The next prime is 26493713. The reversal of 26493680 is 8639462.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 165506 + ... + 165665.

Almost surely, 2^26493680 is an apocalyptic number.

26493680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26493680 is an abundant number, since it is smaller than the sum of its proper divisors (35104312).

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

26493680 is a wasteful number, since it uses less digits than its factorization.

26493680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331184 (or 331178 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 26493680 is about 5147.2011812246. The cubic root of 26493680 is about 298.1128950808.

It can be divided in two parts, 2649 and 3680, that multiplied together give a triangular number (9748320 = T₄₄₁₅).

The spelling of 26493680 in words is "twenty-six million, four hundred ninety-three thousand, six hundred eighty".