26478987 has 8 divisors (see below), whose sum is σ = 35329536. Its totient is φ = 17640552.

The previous prime is 26478973. The next prime is 26479031. The reversal of 26478987 is 78987462.

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

It is not a de Polignac number, because 26478987 - 2⁴ = 26478971 is a prime.

It is a super-2 number, since 2×26478987² = 1402273505092338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26478917) 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, 5538 + ... + 9144.

It is an arithmetic number, because the mean of its divisors is an integer number (4416192).

Almost surely, 2^26478987 is an apocalyptic number.

26478987 is a deficient number, since it is larger than the sum of its proper divisors (8850549).

26478987 is a wasteful number, since it uses less digits than its factorization.

26478987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057.

The product of its digits is 1354752, while the sum is 51.

The square root of 26478987 is about 5145.7737027584. The cubic root of 26478987 is about 298.0577752341.

The spelling of 26478987 in words is "twenty-six million, four hundred seventy-eight thousand, nine hundred eighty-seven".