26787820 has 12 divisors (see below), whose sum is σ = 56254464. Its totient is φ = 10715120.

The previous prime is 26787799. The next prime is 26787823. The reversal of 26787820 is 2878762.

It is not an unprimeable number, because it can be changed into a prime (26787823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669676 + ... + 669715.

It is an arithmetic number, because the mean of its divisors is an integer number (4687872).

Almost surely, 2^26787820 is an apocalyptic number.

26787820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26787820 is an abundant number, since it is smaller than the sum of its proper divisors (29466644).

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

26787820 is a wasteful number, since it uses less digits than its factorization.

26787820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339400 (or 1339398 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 26787820 is about 5175.6951223966. The cubic root of 26787820 is about 299.2120805697.

The spelling of 26787820 in words is "twenty-six million, seven hundred eighty-seven thousand, eight hundred twenty".