26328780 has 48 divisors (see below), whose sum is σ = 81913440. Its totient is φ = 7020864.

The previous prime is 26328779. The next prime is 26328787. The reversal of 26328780 is 8782362.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (26328787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23839 + ... + 24918.

It is an arithmetic number, because the mean of its divisors is an integer number (1706530).

Almost surely, 2^26328780 is an apocalyptic number.

26328780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26328780 is an abundant number, since it is smaller than the sum of its proper divisors (55584660).

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

26328780 is a wasteful number, since it uses less digits than its factorization.

26328780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48775 (or 48767 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 26328780 is about 5131.1577640918. The cubic root of 26328780 is about 297.4931100257.

The spelling of 26328780 in words is "twenty-six million, three hundred twenty-eight thousand, seven hundred eighty".