26979480 has 160 divisors (see below), whose sum is σ = 99055440. Its totient is φ = 6531840.

The previous prime is 26979451. The next prime is 26979481. The reversal of 26979480 is 8497962.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26979481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35262 + ... + 36018.

Almost surely, 2^26979480 is an apocalyptic number.

26979480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26979480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49527720).

26979480 is an abundant number, since it is smaller than the sum of its proper divisors (72075960).

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

26979480 is a wasteful number, since it uses less digits than its factorization.

26979480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 26979480 is about 5194.1775094812. The cubic root of 26979480 is about 299.9239807385.

The spelling of 26979480 in words is "twenty-six million, nine hundred seventy-nine thousand, four hundred eighty".