26928720 has 320 divisors, whose sum is σ = 114992640. Its totient is φ = 5640192.

The previous prime is 26928709. The next prime is 26928773. The reversal of 26928720 is 2782962.

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 196492 + ... + 196628.

It is an arithmetic number, because the mean of its divisors is an integer number (359352).

Almost surely, 2^26928720 is an apocalyptic number.

26928720 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 26928720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57496320).

26928720 is an abundant number, since it is smaller than the sum of its proper divisors (88063920).

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

26928720 is a wasteful number, since it uses less digits than its factorization.

26928720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 26928720 is about 5189.2889686353. The cubic root of 26928720 is about 299.7357673387.

The spelling of 26928720 in words is "twenty-six million, nine hundred twenty-eight thousand, seven hundred twenty".