26478612 has 72 divisors (see below), whose sum is σ = 70709184. Its totient is φ = 8338176.

The previous prime is 26478587. The next prime is 26478623. The reversal of 26478612 is 21687462.

26478612 is a `hidden beast` number, since 2 + 647 + 8 + 6 + 1 + 2 = 666.

It is a super-2 number, since 2×26478612² = 1402233786893088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93423 + ... + 93705.

It is an arithmetic number, because the mean of its divisors is an integer number (982072).

Almost surely, 2^26478612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26478612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35354592).

26478612 is an abundant number, since it is smaller than the sum of its proper divisors (44230572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26478612 is a wasteful number, since it uses less digits than its factorization.

26478612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 424 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 26478612 is about 5145.7372649602. The cubic root of 26478612 is about 298.0563681788.

The spelling of 26478612 in words is "twenty-six million, four hundred seventy-eight thousand, six hundred twelve".