26450280 has 128 divisors (see below), whose sum is σ = 92880000. Its totient is φ = 6676992.

The previous prime is 26450273. The next prime is 26450287. The reversal of 26450280 is 8205462.

It is an interprime number because it is at equal distance from previous prime (26450273) and next prime (26450287).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (26450287) 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, 19876 + ... + 21164.

It is an arithmetic number, because the mean of its divisors is an integer number (725625).

Almost surely, 2^26450280 is an apocalyptic number.

26450280 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 26450280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46440000).

26450280 is an abundant number, since it is smaller than the sum of its proper divisors (66429720).

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

26450280 is a wasteful number, since it uses less digits than its factorization.

26450280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 26450280 is about 5142.9835698746. The cubic root of 26450280 is about 297.9500239001.

The spelling of 26450280 in words is "twenty-six million, four hundred fifty thousand, two hundred eighty".