26401487 has 4 divisors (see below), whose sum is σ = 30173136. Its totient is φ = 22629840.

The previous prime is 26401481. The next prime is 26401511. The reversal of 26401487 is 78410462.

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 26401487 - 2⁶ = 26401423 is a prime.

It is a super-2 number, since 2×26401487² = 1394077031622338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401481) 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, 1885814 + ... + 1885827.

It is an arithmetic number, because the mean of its divisors is an integer number (7543284).

Almost surely, 2^26401487 is an apocalyptic number.

26401487 is a deficient number, since it is larger than the sum of its proper divisors (3771649).

26401487 is an equidigital number, since it uses as much as digits as its factorization.

26401487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771648.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 26401487 is about 5138.2377329197. The cubic root of 26401487 is about 297.7667010258.

The spelling of 26401487 in words is "twenty-six million, four hundred one thousand, four hundred eighty-seven".