26939620 has 24 divisors (see below), whose sum is σ = 58399488. Its totient is φ = 10428000.

The previous prime is 26939617. The next prime is 26939623. The reversal of 26939620 is 2693962.

It is an interprime number because it is at equal distance from previous prime (26939617) and next prime (26939623).

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 26939620.

It is not an unprimeable number, because it can be changed into a prime (26939623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21106 + ... + 22345.

It is an arithmetic number, because the mean of its divisors is an integer number (2433312).

Almost surely, 2^26939620 is an apocalyptic number.

26939620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26939620 is an abundant number, since it is smaller than the sum of its proper divisors (31459868).

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

26939620 is a wasteful number, since it uses less digits than its factorization.

26939620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43491 (or 43489 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 26939620 is about 5190.3391026021. The cubic root of 26939620 is about 299.7762034623.

The spelling of 26939620 in words is "twenty-six million, nine hundred thirty-nine thousand, six hundred twenty".