26506780 has 24 divisors (see below), whose sum is σ = 55761552. Its totient is φ = 10584192.

The previous prime is 26506771. The next prime is 26506801. The reversal of 26506780 is 8760562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20019 + ... + 21301.

It is an arithmetic number, because the mean of its divisors is an integer number (2323398).

Almost surely, 2^26506780 is an apocalyptic number.

26506780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26506780 is an abundant number, since it is smaller than the sum of its proper divisors (29254772).

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

26506780 is a wasteful number, since it uses less digits than its factorization.

26506780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2323 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 26506780 is about 5148.4735601924. The cubic root of 26506780 is about 298.1620217082.

The spelling of 26506780 in words is "twenty-six million, five hundred six thousand, seven hundred eighty".