26728413 has 8 divisors (see below), whose sum is σ = 36466848. Its totient is φ = 17404464.

The previous prime is 26728411. The next prime is 26728423. The reversal of 26728413 is 31482762.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26728413 - 2¹ = 26728411 is a prime.

It is a super-2 number, since 2×26728413² = 1428816122997138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26728411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103470 + ... + 103727.

It is an arithmetic number, because the mean of its divisors is an integer number (4558356).

Almost surely, 2^26728413 is an apocalyptic number.

It is an amenable number.

26728413 is a deficient number, since it is larger than the sum of its proper divisors (9738435).

26728413 is a wasteful number, since it uses less digits than its factorization.

26728413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207243.

The product of its digits is 16128, while the sum is 33.

The square root of 26728413 is about 5169.9529011394. The cubic root of 26728413 is about 298.9907306142.

It can be divided in two parts, 267 and 28413, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 26728413 in words is "twenty-six million, seven hundred twenty-eight thousand, four hundred thirteen".