26421641 has 8 divisors (see below), whose sum is σ = 28460544. Its totient is φ = 24456960.

The previous prime is 26421611. The next prime is 26421643. The reversal of 26421641 is 14612462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26421641 is a prime.

It is a super-2 number, since 2×26421641² = 1396206226265762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26421641.

It is not an unprimeable number, because it can be changed into a prime (26421643) 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, 17816 + ... + 19241.

It is an arithmetic number, because the mean of its divisors is an integer number (3557568).

Almost surely, 2^26421641 is an apocalyptic number.

It is an amenable number.

26421641 is a deficient number, since it is larger than the sum of its proper divisors (2038903).

26421641 is a wasteful number, since it uses less digits than its factorization.

26421641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37111.

The product of its digits is 2304, while the sum is 26.

The square root of 26421641 is about 5140.1985370217. The cubic root of 26421641 is about 297.8424500888.

The spelling of 26421641 in words is "twenty-six million, four hundred twenty-one thousand, six hundred forty-one".