26940381 has 16 divisors (see below), whose sum is σ = 38841600. Its totient is φ = 16511040.

The previous prime is 26940373. The next prime is 26940409. The reversal of 26940381 is 18304962.

It is not a de Polignac number, because 26940381 - 2³ = 26940373 is a prime.

It is a super-2 number, since 2×26940381² = 1451568256850322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26940301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9295 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (2427600).

Almost surely, 2^26940381 is an apocalyptic number.

It is an amenable number.

26940381 is a deficient number, since it is larger than the sum of its proper divisors (11901219).

26940381 is a wasteful number, since it uses less digits than its factorization.

26940381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 26940381 is about 5190.4124113600. The cubic root of 26940381 is about 299.7790261641.

The spelling of 26940381 in words is "twenty-six million, nine hundred forty thousand, three hundred eighty-one".