27775020 has 96 divisors (see below), whose sum is σ = 95735808. Its totient is φ = 5859072.

The previous prime is 27775003. The next prime is 27775043. The reversal of 27775020 is 2057772.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2917 + ... + 8003.

It is an arithmetic number, because the mean of its divisors is an integer number (997248).

Almost surely, 2^27775020 is an apocalyptic number.

27775020 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 27775020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47867904).

27775020 is an abundant number, since it is smaller than the sum of its proper divisors (67960788).

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

27775020 is a wasteful number, since it uses less digits than its factorization.

27775020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119 (or 5117 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 27775020 is about 5270.2011346817. The cubic root of 27775020 is about 302.8434093774.

The spelling of 27775020 in words is "twenty-seven million, seven hundred seventy-five thousand, twenty".