26325640 has 128 divisors (see below), whose sum is σ = 70502400. Its totient is φ = 8743680.

The previous prime is 26325617. The next prime is 26325679. The reversal of 26325640 is 4652362.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26325599 and 26325608.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392887 + ... + 392953.

It is an arithmetic number, because the mean of its divisors is an integer number (550800).

Almost surely, 2^26325640 is an apocalyptic number.

26325640 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 26325640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35251200).

26325640 is an abundant number, since it is smaller than the sum of its proper divisors (44176760).

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

26325640 is a wasteful number, since it uses less digits than its factorization.

26325640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 26325640 is about 5130.8517811373. The cubic root of 26325640 is about 297.4812831009.

The spelling of 26325640 in words is "twenty-six million, three hundred twenty-five thousand, six hundred forty".