26420780 has 24 divisors (see below), whose sum is σ = 56314608. Its totient is φ = 10410048.

The previous prime is 26420759. The next prime is 26420803. The reversal of 26420780 is 8702462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8519 + ... + 11198.

It is an arithmetic number, because the mean of its divisors is an integer number (2346442).

Almost surely, 2^26420780 is an apocalyptic number.

26420780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26420780 is an abundant number, since it is smaller than the sum of its proper divisors (29893828).

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

26420780 is a wasteful number, since it uses less digits than its factorization.

26420780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19793 (or 19791 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 26420780 is about 5140.1147847106. The cubic root of 26420780 is about 297.8392147973.

The spelling of 26420780 in words is "twenty-six million, four hundred twenty thousand, seven hundred eighty".