26928240 has 160 divisors (see below), whose sum is σ = 89190720. Its totient is φ = 6709248.

The previous prime is 26928233. The next prime is 26928247. The reversal of 26928240 is 4282962.

It is an interprime number because it is at equal distance from previous prime (26928233) and next prime (26928247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26928247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368844 + ... + 368916.

It is an arithmetic number, because the mean of its divisors is an integer number (557442).

Almost surely, 2^26928240 is an apocalyptic number.

26928240 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 26928240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44595360).

26928240 is an abundant number, since it is smaller than the sum of its proper divisors (62262480).

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

26928240 is a wasteful number, since it uses less digits than its factorization.

26928240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 26928240 is about 5189.2427193185. The cubic root of 26928240 is about 299.7339864145.

The spelling of 26928240 in words is "twenty-six million, nine hundred twenty-eight thousand, two hundred forty".