26820620 has 48 divisors (see below), whose sum is σ = 57915648. Its totient is φ = 10430400.

The previous prime is 26820613. The next prime is 26820653. The reversal of 26820620 is 2602862.

It is a self number, because there is not a number n which added to its sum of digits gives 26820620.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177545 + ... + 177695.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576).

Almost surely, 2^26820620 is an apocalyptic number.

26820620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26820620 is an abundant number, since it is smaller than the sum of its proper divisors (31095028).

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

26820620 is a wasteful number, since it uses less digits than its factorization.

26820620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 26820620 is about 5178.8628095365. The cubic root of 26820620 is about 299.3341528817.

The spelling of 26820620 in words is "twenty-six million, eight hundred twenty thousand, six hundred twenty".