27900620 has 48 divisors (see below), whose sum is σ = 65995776. Its totient is φ = 9816000.

The previous prime is 27900619. The next prime is 27900629. The reversal of 27900620 is 2600972.

It is a self number, because there is not a number n which added to its sum of digits gives 27900620.

It is not an unprimeable number, because it can be changed into a prime (27900629) 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, 4775 + ... + 8865.

It is an arithmetic number, because the mean of its divisors is an integer number (1374912).

Almost surely, 2^27900620 is an apocalyptic number.

27900620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27900620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32997888).

27900620 is an abundant number, since it is smaller than the sum of its proper divisors (38095156).

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

27900620 is a wasteful number, since it uses less digits than its factorization.

27900620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4142 (or 4140 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 27900620 is about 5282.1037475612. The cubic root of 27900620 is about 303.2992139165.

The spelling of 27900620 in words is "twenty-seven million, nine hundred thousand, six hundred twenty".