26621047 has 4 divisors (see below), whose sum is σ = 26720280. Its totient is φ = 26521816.

The previous prime is 26621039. The next prime is 26621053. The reversal of 26621047 is 74012662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26621047 - 2³ = 26621039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26621087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49213 + ... + 49750.

It is an arithmetic number, because the mean of its divisors is an integer number (6680070).

Almost surely, 2^26621047 is an apocalyptic number.

26621047 is a deficient number, since it is larger than the sum of its proper divisors (99233).

26621047 is an equidigital number, since it uses as much as digits as its factorization.

26621047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99232.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 26621047 is about 5159.5587989672. The cubic root of 26621047 is about 298.5898523681.

The spelling of 26621047 in words is "twenty-six million, six hundred twenty-one thousand, forty-seven".