20127380 has 48 divisors (see below), whose sum is σ = 52026240. Its totient is φ = 6369408.

The previous prime is 20127361. The next prime is 20127407. The reversal of 20127380 is 8372102.

It is a super-2 number, since 2×20127380² = 810222851328800, which contains 22 as substring.

It is a congruent number.

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, 3710 + ... + 7349.

It is an arithmetic number, because the mean of its divisors is an integer number (1083880).

Almost surely, 2^20127380 is an apocalyptic number.

20127380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20127380 is an abundant number, since it is smaller than the sum of its proper divisors (31898860).

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

20127380 is a wasteful number, since it uses less digits than its factorization.

20127380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088 (or 11086 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20127380 is about 4486.3548678186. The cubic root of 20127380 is about 272.0168134070.

Adding to 20127380 its reverse (8372102), we get a palindrome (28499482).

The spelling of 20127380 in words is "twenty million, one hundred twenty-seven thousand, three hundred eighty".